Diaskintest is a modern alternative to the outdated and insufficiently reliable Mantoux test. It is used to accurately diagnose pulmonary tuberculosis in adults and children at any stage. The advantage of this drug is that it only responds to viable Mycobacterium tuberculosis, and not to weakened strains that are injected during BCG vaccination. In other words, with the help of Diaskin, it is possible to establish with high accuracy whether or not a person is infected with mycobacterium tuberculosis (MBT), and if so, then immediately assess the activity of pathogens. For the correct interpretation of the test results from a trained specialist, it is necessary to check Diaskintest no later than 72 hours later.
Diaskintest in its composition and effectiveness differs from the Mantoux test, which is more familiar to the population. But the execution technology is similar. The drug is also injected intradermally into the right or left forearm. Diaskintest's check is carried out in a medical institution on the third day after the procedure, that is, after 72 hours. The time of onset of symptoms with Diaskintest depends on the number of bacteria in the body and their activity. Normally, the response should improve.
Why Diaskintest is checked after 72 hours
The sample is checked after 72 hours, since it is after this period of time that the first signs of an open form appear if the patient is sick with tuberculosis. Immediately after the injection and on the first day at the injection site, redness, slight swelling, bruising may occur - this is considered a normal reaction.
If the procedure was carried out correctly, at the time of the test there were no contraindications, and the person is not allergic to the active substance of the drug, after a while the redness and swelling go away on their own. If the body's response to the tuberculin test begins, it will develop incrementally and reach its peak after 3 days. The final result will be visible in about 72 hours. By this time, it will already be possible to accurately judge by the reaction whether the examined person is infected with Koch's bacillus or not. Then the symptoms will gradually begin to decrease, so the assessment of the reaction results on the 4th day and later cannot be considered reliable.
Sometimes, immediately after the administration of the drug, a patient develops severe hyperemia, a large papule swells, and after 72 hours everything goes away. This indicates a malfunctioning of the immune system. It is urgent to perform additional analysis on and conduct further thorough research in order to accurately establish the cause of this phenomenon.
Briefly about decoding the test result
The reaction results are assessed similarly to the Mantoux test. First of all, the size of the papule is taken into account.
- If there is a speck without infiltration, no more than 0.2 cm in size, or in general there is only a small trace of the injection, Diaskintest is negative. This means that there is nothing to worry about, there are no mycobacteria in the body, or they are negligible and they are in a dormant state.
- Redness up to 0.5 cm in diameter without pronounced seals speaks of a dubious reaction to Diaskintest. Perhaps the technique of staging Diaskintest was violated, or there were hidden contraindications - for example, the initial stage of a cold or viral infection, which the patient himself did not know about.
- A pronounced red papule with a diameter of more than 0.5 cm, infiltration, the presence of other symptoms (fever, weakness, rash, general deterioration of the condition) - we are talking about a positive reaction. This means that a person is a carrier of a large number of MBTs, and they are active.
A positive reaction is also divided into several categories, depending on the size of the papule and other signs.
- weakly positive - papule not more than 0.5 cm;
- moderately positive - a papule ranging in size from 0.5 to 0.9 cm;
- a pronounced positive reaction - the diameter of the papule is from 1 to 1.5 cm;
- strongly pronounced - the papule is more than 1.5 cm.
A pronounced reaction is also called hyperergic. Often accompanied by inflammation and suppuration of papules at the injection site, a strong increase in body temperature, an increase and soreness of the lymph nodes. In any case, further, deeper studies will be required for the final diagnosis.
The absence of any reaction at all after testing indicates the presence of immunity in tuberculosis in the subject. This happens in cases where a person has already suffered a tuberculosis infection and has been successfully cured, or tuberculosis has passed into a latent form (development).
Is it possible to reduce the result of Diaskintest
If, together with the test, severe redness, swelling occurs, patients are frightened and begin to look for a way to reduce Diaskintest. It is absolutely not worth doing this. If you violated the regimen after the procedure (took a hot shower or bath, injured the injection site), it is wiser to inform your doctor about this and, if necessary, do Diaskintest again.
It is strictly forbidden to wipe the papule with alcohol solutions, smear with ointments, glue, bandage, apply cold or heat. This can lead to increased reactions and false results. If the reaction is pronounced, then there is no point in turning away from it. You should consult a doctor as soon as possible and undergo a course of treatment.
Even if the child is allergic, you should not give him antihistamines before taking the test - after all, an allergen is introduced into the body, and with the help of antiallergic drugs, you deliberately distort the reliability of the results. Carrying out Diaskintest does not require adherence to a sparing diet, refusal of sweets, and the like, in contrast to the Mantoux test. All that is required is not to comb, not to warm up and not to smear the papule with anything until the result is assessed. The doctor will tell you what to do next to reduce the flushing.
How reliable is the result of the Diaskntest
The reliability of Diaskintest in comparison with the Mantoux test is an order of magnitude higher. Diaskintest may be wrong if the technique for setting the sample was violated or the patient is allergic to Diaskintest. If the tuberculin test was performed correctly, the accuracy of Diaskintest is more than 90%, the sensitivity of the drug is more than 80%.
That is why Diaskintest is recommended to be carried out by everyone who has a dubious or positive Mantoux reaction. The test will make it possible to accurately determine whether it was a reaction to BCG or to the presence of a true tuberculosis infection in the body. But at the same time, Diaskintest cannot completely displace and replace the Mantoux test. With its help, it is impossible to establish whether revaccination against tuberculosis is required at 7 and 14 years old, since the drug simply will not "see" dead MBT strains that are administered during vaccination to form immunity. In these cases, a Mantoux test will still be performed before vaccination.
Is a positive Diaskintest tuberculosis?
Yes, if the reaction was positive, it is almost 100% an indicator that a person has tuberculosis. Don't panic. It will be necessary to conduct an additional examination and determine the course of treatment as soon as possible. In the initial stages, with the help of antibacterial drugs, you can get rid of tuberculosis in 3-4 months.
Doubtful Diaskintest - what should be done?
The accuracy of the Diaskintest result is much higher in comparison with the traditional Mantoux test. This is not a vaccine, as many uninformed parents believe. And just an immunological test, checking how closely the body came across mycobacterium tuberculosis. Diaskintest allows you to determine almost 100% whether a person is sick with tuberculosis or not, as well as to determine with great certainty the risk of developing the disease in the next 12-24 months.
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Outbreak of tuberculosis causes need for improvement diagnostics this insidious disease, which can be asymptomatic for a long time.
Along with traditional tests, new ones are used today. innovative techniques to which Diaskintest belongs.
Diaskintest was developed in MAI them. Sechenov and after clinical trials it is recognized as one of the leading methods of diagnosing tuberculosis
Diaskintest: what is it
Diaskintest allows you to determine the presence of an infectious process due to the body's reaction to the introduction of special proteins, the carrier of which is Koch's bacillus.
Scientifically speaking, it is recombinant allergen- a protein of the microorganism that causes the disease. It includes two antigens.
They are absent in the composition of the substance used for the BCG vaccination. The drug is diluted with isotonic phosphate solution before use.
It should be remembered that phenol is included in the preparation as a preservative.
Diaskintest is carried out in the form injections, which is placed in the thickness of the skin. A positive reaction in the form of skin manifestations will be noted when the examined person is infected or already sick.
It is important that after therapy and recovery, in the presence of BCG vaccination and immunity to Koch's bacillus, the test will be negative. All this allows Diaskintest to be considered a reliable and effective method for detecting tuberculosis.
Comparison of the skin test with the Mantoux sample
Before the appearance of a new type of analysis in our country, the Mantoux reaction was widespread. Both tests are based on the appearance of a skin reaction. The method of setting is also identical: it is injected into the dermis solution... However, there are also significant differences.
The main active ingredient used in the Mantoux reaction is tuberculin, a protein that is not unique to Koch's bacillus. It is found in a number of related microorganisms that are not capable of causing disease, and is also included in the BCG vaccine.
Therefore, a positive reaction after the Mantoux test can be observed not only in the case of a disease.
It simply indicates that the body has already dealt with tuberculin.
This happens when:
- passed short term from the time of the vaccination;
- was contact with infected people;
- there are non-pathogenic microorganisms, related to Koch's stick.
Skintest includes synthetically created proteins ESAT6 / CFP10 characteristic of the causative agents of tuberculosis. Accordingly, its introduction makes it possible to identify with high reliability whether the organism is familiar with Koch's bacillus specifically, and also gives an accurate answer whether a person is infected or sick. In this case no chances of false positive reactions, as in the case of Mantoux.
Pros of the D-test
Diaskintest advantages:
- it is highly sensitive and in 90% of cases gives an accurate answer to the question of whether a person is a carrier of pathogens;
- give a chance distinguish infection of the body from conditions after vaccination and carriage of non-pathogenic related microflora;
- allows monitor the effectiveness of treatment tuberculosis.
Important! Drug administration cannot cause infection and development of the tuberculous process, neither in the absence of pathology before, nor in the case of carriage, since does not contain live microorganisms.
When to do a di-test for tuberculosis
In spite of high cost Diaskintest, this technique is recognized as more preferable due to its information content. Disintesting should be done if:
- received positive the result of the Mantoux reaction;
- preventive actions are needed to identify sick children from 1 to 16 years old;
- there is contact with sick people tuberculosis;
- required diagnostics disease and assessment of the activity of its course;
- need to define end of therapy.
High-risk individuals should prefer this type of research. Experts recommend choosing Diaskintest when carrying out diagnostic measures among children due to its high information content. In parallel, the doctor may prescribe a radiological survey.
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How is DST carried out
With Diaskintest, the drug is injected subcutaneously with a special tuberculin syringe and an oblique needle. Only solution that has not expired is used. The sample requires 0.2 ml of the drug.
Photo 1. The injection is injected into the upper part of the forearm, intradermally, 0.2 ml of the drug is used.
Algorithm of actions when conducting Diaskintest:
- the syringe is typed 0.2 ml;
- 0.1 ml descends before insertion into a cotton swab;
- a patient sits down on a chair;
- freed up upper forearm;
- mid-forearm area processed with alcohol;
- the skin is stretched intradermally the solution is introduced.
Normally, after carrying out Diaskintest, a papule in the form of a lemon peel should appear in size 7-10 mm.
Important! For nonspecific allergic reactions, you must first take desensitizing means.
There should be from 2 to 6 months. You should also observe a one-month break between vaccinations and testing.
Decoding the result of the DST test
A medical worker evaluates the result of the CI test, the check is in progress in 48-72 hours after drug administration. To do this, apply ruler.
With its help, a medical professional measures the size of the skin lesion that has appeared. It is positioned transversely with the forearm.
The result could be:
- negative;
- positive;
- dubious;
- hypergic.
What does the norm look like
If the result is negative, there are no redness and seals at the injection site (or their size does not exceed 2 mm). A pricking bruise is allowed. With a positive reaction, visually noticeable redness and swelling with a diameter from 5 mm. If the stain less than 5 mm but more than 2 mm, speak of a weak positive reaction.
Questionable result
In doubtful cases, in the desired place, reddish manifestations with a length of 2-4 mm... Sometimes after Diaskintest, an unusual hypergic reaction is revealed with the formation of large seals with a diameter 14 mm and more, ulcers, vesicles. A lymph node in the armpit or elbow may become enlarged.
Important! In all cases, except for the negative patient, refer to additional survey and register.
The reaction is growing within 3 days after the introduction of the funds. If you evaluate the result later 72 hours, it will no longer be informative, so you need to contact a specialist to decrypt it exactly at the specified time. Don't do it yourself.
Photo 2. This is how the positive result of Diaskintest looks like. A repeat test should be done two months later.
In such cases, a person receives a referral to a tuberculosis dispensary, where he is registered. A number of studies are underway. Prescription of medications is possible. Repeated sample is done 2 months later... If the result is negative, the person is removed from the register.
Is preparation for research required?
No special preparation for Diaskintest is carried out, however, it is recommended to visit a therapist to identify contraindications at the time of the test. If they are found, you will have to undergo treatment for exacerbated diseases.
Lifestyle restrictions
The results of Diaskintest are not affected by nutrition and ingress of water at the injection site (in contrast to the Mantoux reaction). Therefore, the sample is theoretically can be wet... The only exception is skin that is sensitive and prone to allergic reactions. In this case, it is worth protecting the injection site from water.
The only thing that experts warn against is getting drugs at the injection site. household chemicals.
This can lead to itching and staining, so washing with soap and shower gels should be avoided for a while. You should not be afraid of accidental water ingress.
What is diaskintest and what its results testify - every person who cares about their health should know. This is a vaccination for tuberculosis, or rather, a test that detects the presence of Koch's bacillus in the body.
Diaskintest - a test that helps to identify tuberculosis in the body
Diaskintest - what is it?
Diaskintest (DST, DST)- an immunological study, the purpose of which is to study the reaction of the human body to tuberculosis, to identify the disease in the active or dormant phase. Injection is an alternative, improved version of it.
The test is characterized by increased selectivity and sensitivity to the causative agent of the disease.
The preparation contains:
- proteins of tuberculosis bacteria (Mantoux test is based on tuberculin) - active ingredient;
- phenol (dose safe for humans);
- polysorbate;
- water;
- sodium chloride;
- phosphoric acid potassium and sodium.
The main active ingredient of the drug is proteins of tuberculosis bacteria
The drug is used to detect infection in different population groups and is prescribed as an analogue or addition to the Mantoux test.
Mantoux or diaskintest - which is better and safer?
Mantoux and Diaskintest are completely safe injections that do not entail infection with tuberculosis. Both tests are prescribed individually, taking into account all contraindications and restrictions. Diaskintest is more accurate - it reacts only to active mycobacteria and practically does not cause side effects. He is preferred by private clinics. In public hospitals, specialists prefer the Mantoux test, a method proven over many generations. Which test is best depends on the specific situation, as well as the characteristics of the child's and adult's body.
Where to make DST and how much does it cost?
The main institutions for conducting immunological research for the detection of Mycobacterium tuberculosis are:
- anti-tuberculosis dispensaries;
- research anti-tuberculosis centers;
- polyclinics for children and adults.
For children of DST, the test is done in kindergarten and every year at school. During pregnancy, the test is indicated for women who are registered in a TB dispensary or who have had a disease in the past.
Vaccination is indicated for pregnant women who have previously suffered from tuberculosis
If a vaccine is available, the tuberculosis vaccination in public hospitals is free of charge. In private clinics, diaskintest costs an average of 895 rubles.
Preparation for vaccination for tuberculosis
Special preparation for DST vaccination is not required. It doesn't matter if the test is done on an empty stomach or after a meal.
The main condition for DST is a completely healthy child or adult for a month before the test and at the time of manipulation.
How is the diaskintest carried out?
Diaskintest is a painless and quick procedure that does not cause discomfort to the patient. The technique of setting the DST does not differ from the Mantoux test. In a tuberculin syringe with a thin and short needle, the drug is drawn in an amount of 0.1 ml, and injected under the skin. The inoculation is done from the inside of the forearm into the right or left arm, depending on which limb of the patient is less active. The photo shows that the injection is being placed.
Diaskintest injection process
What can and cannot be done after vaccination?
The reliability of the results largely depends on adherence to the doctor's recommendations after the manipulation.
- It is forbidden to treat the injection site with detergents, disinfectants and cosmetics.
- Do not bandage or tape the injection area.
- It is contraindicated to mechanically act on the skin in the area of ββthe injection - rub, scratch, scratch.
Rubbing and scratching the injection site is prohibited.
After the procedure, you can wash and wet your hand, but without using hygienic substances. There are no changes in the diet and habitual lifestyle of a person, except for the rejection of alcohol and unhealthy foods - you cannot eat very fatty, salty and spicy foods. The use of sweets is allowed.
The norm in children and adults
The reaction to the sample is checked after 72 hours. The norm in adults and children, which indicates the absence of tuberculosis in the body, is a negative result. The symptoms in this case are as follows:
- ate a noticeable injection mark;
- the place where the sample was placed is slightly compacted (up to 1 cm in diameter), there is no redness;
- a bruise at the injection site measuring 1-3 mm.
A negative result on diaskintest does not have papules, epidermal hyperemia, swelling of the skin at the injection site.
What a normal reaction to TB should look like can be seen in the photo.
Normal sample reaction after 72 hours
Evaluation of results
The test of the reaction to the sample is carried out three days after inoculation. Evaluation of the results by day is not very informative, since the body's response may appear already on the first day 5β7 hours after vaccination or develop on the second day in the form of severe redness and swelling. The most accurate result of an immunological study can be obtained only after 72 hours.
Depending on the formed seal at the injection site and the diameter of the redness, the doctor interprets the results.
- Negative reaction of the body- the injection site does not contain papules and skin redness. The test does not cause discomfort in a child or an adult - it does not itch, there is no burning sensation, the body temperature is normal.
- False positive or questionable result- the presence of a slight swelling of soft tissues at the site of the puncture of the skin or redness. The diameter of such manifestations does not exceed 2β4 mm. In this case, the patient is sent to the TB dispensary for clarifying diagnostics - fluorography, additional tests and re-taking the test after 60 days.
- Positive result- Severe skin hyperemia, the presence of papules. The size of redness, seals - from 5 to 10 mm.
- Hyperergic reaction- thickening and redness of the skin at the injection site has a diameter of 10 to 15 mm. In this case, the person has an increase in temperature, the sample itches, the axillary lymph nodes increase.
What the place looks like after vaccination with a positive result is shown in the photo.
The type of positive result for the Diaskintest test
The reasons for the appearance of papules and redness at the injection site is the presence of tuberculosis rods in the body. The more the expression of inflammation on the hand, the more the pathogen is inside.
Side effects
Diaskintest is not harmful to the body. The immune system's natural response to antigenic proteins is:
- temperature rise to 37.5 degrees;
- short-term general malaise;
- headache.
Contraindications to vaccination
All vaccinations and samples should only be given to a completely healthy person.
Contraindications to diaskintest are:
- diseases of internal organs in the stage of exacerbation - pancreatitis, hepatitis, pyelonephritis, colitis, ulcerative processes in the digestive system;
- infectious and viral pathologies, accompanied by severe inflammation and fever - colds, acute respiratory viral infections, bronchitis, pneumonia;
- allergic exacerbations with atopic dermatitis;
- epileptic seizures;
- skin diseases - psoriasis, eczema - in an acute course.
In psoriasis, testing is contraindicated.
You cannot be vaccinated for tuberculosis with a runny nose, with a cough, and also if 1-1.5 months have not passed after an illness or vaccination.
Possible consequences and complications
DST vaccination contains proteins foreign to the human body and can provoke allergies in the form of a rash, severe redness, blisters on the skin that itch and bake. Similar manifestations occur most often in allergy sufferers and children with atopic dermatitis. Subject to the contraindications and all the recommendations of the doctor, DST is completely harmless and not dangerous to human health.
In allergy sufferers, the test can cause an allergy in the form of a rash.
Diaskintest is one of the ways to diagnose tuberculosis in adults and children. With its help, you can also determine the main risk group, and also assess the success of treatment. However, it cannot be considered an analogue of the tuberculin test, which is used to select patients for primary vaccination and revaccination of BCG.
Diaskintest is not used for children under the age of one year: it is usually intended for the diagnosis of tuberculosis in adults and older children and is used together with other research methods.
Normal and other types of reactions
Conclusions after the procedure are made based on what kind of reaction to Diaskintest is found in the patient. There are three main reactions, and each can be divided into separate subspecies, depending on the characteristics. It:
If negative results are found, the patient needs to undergo an additional examination in order to confirm or deny the alleged diagnosis. They should be assessed by a specialist; Diaskintest can also be carried out only by a nurse with a sufficient level of qualification so that the reaction shows the true condition of the patient.
It is very important that the technique for performing this test is correct, and that the injected solution is suitable for use. Otherwise, there is a risk of distorted results.
Normally, the reaction to this test should be negative.
That is, the patient after Diaskintest should not have any external signs of its use. The following are also considered acceptable:
- injection mark;
- a small bruise at the injection site, no more than 2 mm in size;
- a small seal, the size of which does not exceed 1 cm.
As it becomes clear, nothing else should be observed after the injection. If a large bruise, severe swelling or papule is detected, this is a reason for additional examination. This often means that the patient is developing tuberculosis. But sometimes deviations from the norm can arise due to improper execution technique, poor-quality drug or contraindications.
It is desirable to evaluate the results three days after the procedure. Although usually a certain reaction occurs on the first day. In the following days, it intensifies, and after three days it begins to subside. Therefore, the most accurate assessment can be made when the response is maximal.
In case of a dubious reaction to Diaskintest, you will have to undergo additional tests, and after 2 months, repeat this procedure. Sometimes the results are favorable, which allows you to be sure that there is no infection. However, you should make sure of this.
If there is a positive Diaskintest reaction (regardless of the size of the papule), additional examination is also required. After that, in most cases, treatment is required. The patient is registered at the dispensary and the form of the disease is identified. But there are also situations when the test shows erroneous results.
Allergic and hyperergic reaction
Sometimes an allergic reaction occurs to Diaskintest. In this case, we are not talking about side effects, which often appear, but about a serious problem. The fact is that the drug that is injected into the skin during such a diagnosis contains a foreign protein. Because of it, an allergy to Diaskintest occurs, while its manifestations can be varied.
If a child or an adult is prone to allergic reactions, before carrying out this procedure, it is better to make sure that there is no excessive sensitivity to the components of the drug.
Because in this case, there is a threat to the patient's health, in contrast to ordinary situations when Diaskintest is safe and does not cause harm.
If the conducted Diaskintest led to the occurrence of an allergy, this is the reason for the categorical rejection of this diagnostic method in the future. However, do not mistake a slight fever, headache, or mild malaise for an allergy. Most often, these symptoms are a common reaction to the procedure and will go away quickly. But if they do not disappear, and the patient's well-being only worsens, then it is worthwhile to consult a doctor.
Another term used to describe this procedure is the concept of "hyperergic reaction to Diaskintest". It is very important to know what it is, and how to treat the doctor's words about the detection of this type of reaction.
A hyperergic reaction means that the patient has an overly strong reaction to the administration of the drug. In other words, such results are not just positive, but exaggeratedly positive.
As a rule, in this case, not only redness, bruising and swelling are found. Papules with a hyperergic reaction in size can exceed 15 mm. The tissue around the papule is often inflamed, and severe irritation also occurs.
Tuberculosis is a serious pathology of our time. The disease can predominate for a long time in a latent form, and with a weakening of immunity or the influence of another pathogenic factor, it can remind of itself with an acute course of an abnormal process. To determine the diagnosis, it is recommended to use Diaskintest.
What is Diaskintest
Compared to the Mantoux reaction, this drug tester is a relatively new development of modern scientists. This is not a vaccine, but a test sample that can diagnose latent tuberculosis with maximum accuracy. Mantoux and Diaskintest, in fact, have the same purpose, but in the latter case, a positive test means an absolute indication for a course of chemotherapy against tuberculosis. When the phrase Diaskintest sounded - that not all patients know this, many are more accustomed to hear about the Mantoux hyperergic reaction.
How Diaskintest is done
The innovative product is based on protein allergens, which a doctor injects subcutaneously into a patient to determine the patient's reaction to such foreign bodies. If similar substances are already present in the chemical composition of the blood, this means that tuberculosis is inherent in a latent form, and the clinical patient becomes a carrier of the tuberculosis bacillus. It is possible that the disease produces in the active stage, requires the immediate initiation of intensive therapy. If the answer is negative, medical and health measures are not required.
The patient knows in which hand Diaskintest is done, since this is a vaccination similar to Mantoux. In fact, the hand does not matter, but the mandatory area is the forearm zone to reduce discomfort for the patient during the procedure. Doctors recommend choosing the hand that is less involved in everyday life, where there is only a slight load (for the vast majority of cases, this is the left forearm). Otherwise, the sequence of actions is well known to every nurse.
Diaskintest results
All patients are not interested in the process of performing the test, but in the result obtained. This is especially true for people from the so-called risk group, in whom the Mantoux reaction is always pathologically increased. For those who are not aware of what Diaskintest shows, it is worth clarifying: this modern test, administered subcutaneously, determines the presence or absence of a tubercle bacillus in the blood. A positive response is fatal and requires immediate medical attention and treatment. A negative one indicates a person's perfect health in terms of the diagnosis of tuberculosis.
Positive
If this modern test for Diaskintest tuberculosis is performed, the patient can only wait for the results, observe the changes in the condition of the skin. If on the same day or every other day there is an obvious redness with the further formation of papules - this is a clear sign of an inflammatory process, although in fact the answer may be false positive.
The reaction to Diaskintest for adults and children grows for three days, after which it will no longer be possible to accurately determine the presence of a pathological process. It is required to contact a phthisiatrician in a timely manner, who knows exactly what a positive d-test should look like. Also, useful information can be found in the instructions for the specified drug.
False positive
If there is hyperemia of the skin at the site of the direct injection, doctors do not exclude that the reaction to Diaskintest is false-positive. This is encouraging, since in fact there may not be a tubercle bacillus in the blood. For the investigation of such a clinical picture, the patient is sent to a tuberculosis dispensary, where they are put on a dispensary record. In the future, it is recommended to conduct a number of clinical and laboratory studies, and after 2 months, repeat the Diaskintest test and obtain a reliable result.
Negative
Before you panic and worry about your health, it is recommended to find out from your doctor what Diaskintest should be normal. The ideal option is a colorless lump with a diameter of 1 mm, a barely noticeable injection mark or a small bruise. Redness, which will itch strongly and be accompanied by the formation of an impressive papule, should certainly not appear in the forearm.
When Diaskintest for tuberculosis is contraindicated
Such a test is a modern development of scientists, it leaves far behind the obsolete Mantoux reaction. However, not all patients are allowed to conduct this test, since the instruction contains contraindications for Diaskintest and potential side effects. So, the vaccine cannot check the presence of a tubercle bacillus in the following categories of patients, it is not recommended for such clinical pictures:
- diseases of a viral and infectious nature of the stage of relapse;
- predisposition to an allergic reaction;
- bronchial asthma, skin diseases;
- colds, runny nose, fever;
- systematic alcohol abuse;
- allergy to tuberculin, other synthetic components of the specified drug.
- carefully perform the test during pregnancy, but the lactation period is not a relative contraindication.
How to prepare for Diaskintest
No preparatory measures are required, but before the test, it is necessary to undergo an examination by a therapist for viral and infectious diseases in the relapse stage. It is very important that at least one month has passed since the previous test. There is no need for other preparatory measures, the vaccination can be done equally for adults and children. Parents are interested at what age Diaskintest can be done: the answer is from the age of 1 year with a positive Mantoux test.
When studying what Diaskintest is, and how it is carried out, it is important to remember that this is the most sparing vaccination with the subcutaneous injection of a specific protein to develop the body's immune response. Normally, there is no red spot, with pathology it can reach 8-10 millimeters. The result obtained is not affected by the preliminary intake of sweet and starchy foods; moreover, the sample can be wetted. It is important to avoid getting household chemicals on the injection site, otherwise a stain appears that will itch for a while. Additionally, it is worth finding out how Diaskintest is done in order to tune in.
Where to do
If you go to a tuberculosis dispensary, you can perform a test if you have medical indications and an insurance policy. In addition, the local therapist will also tell you where you can do Diaskintest - an intradermal test for tuberculosis. It makes sense to order a service in a paid clinic, but the final assessment does not differ at all from the results of state health care institutions. It is better to conduct a test inexpensively and from trusted specialists who exclude the Diaskintest tuberculosis test.
The price
Most patients are interested in the main question: how much does Diaskintest cost? The price can be found in a private clinic from the catalog of services provided. On average, the cost of a vaccine is similar to an HIV test, available to accurately detect mycobacterium. The price of the drug is up to 2,000 rubles per bottle. If you buy in an online store, it will be cheaper, but it is better not to save on your health. Normally, the Diaskintest test is done in the morning on an empty stomach, and the compaction appears by the evening.
If the test gives an erroneous answer, it is necessary to repeat the diagnosis after another 2 months. The price of the procedure will be the same, but the patient gets complete confidence in the final diagnosis, which is communicated to him by the attending physician. This means that he will 100% know whether a disease-causing infection is present in his body or not. If the answer is yes, the price of the treatment goes off scale and requires a course of chemotherapy.
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