Tuberculin Old

Tuberculin Old

Tuberculins (tuberculins of the elder Koch), are used in the differential diagnosis of tuberculosis, cause allergies. Introduced in 1929 by Koch, the causative agent of tuberculosis in the human body, and therefore is called tuberculins. Available in powder form. This method is used to detect tuberculosis, since its products cause inflammatory changes in the lungs. Currently, antihistamines are used to treat them. It is administered intradermally. After administration of the sample, in most cases a local inflammatory reaction develops, which gradually weakens and disappears completely after 7 days. The 4th size of the compaction is considered pathognomonic, indicating the release of certain antigens. There are special control scales. In children, a tuberculin test should be carried out in compliance with safety regulations to prevent an allergic reaction. Usually, a tuberculin test is not performed on children under one year of age, because they are prone to delayed-type hypersensitivity. The response to the introduction of tuberculin, which determines the state of anti-tuberculosis immunity, is the Mantoux reaction. The Mantoux test is a response to the introduction of a specific “allergen” - a substance contained in the “tuberculin” bacterium. Unlike the Koch test, it is allowed to be used for diagnosing tuberculosis in children of the first year of life, since the reaction to the tuberculin allergen provides an accurate and quick response to infection. The reaction to tuberculin is considered positive if: 1. the child has an enlarged area of ​​redness or it exceeds 5 mm. 2. There is hyperemia, infiltration and compaction, the diameter of which exceeds 7 mm. If the results are questionable, the reaction is checked 3 to 2 weeks after its appearance (interval for assessing the assessment).