Luethin Reaction

The luetin reaction is an intradermal allergy test that is used to diagnose syphilitic infection. It was proposed in 1906 by the French scientist Charles Riquet and named after him. The luetin test is a way to determine the presence of antibodies to Treponema pallidum in the blood.

To carry out the test, a small incision is made on the patient's skin, which is then filled with a special solution containing luetin, a toxin secreted by treponema pallidum. If the patient’s body contains antibodies to treponema, then upon contact with luetin an allergic reaction may occur, which manifests itself in the form of redness and swelling of the skin at the injection site.

However, the luetin test is not an accurate method for diagnosing syphilis, as it can give false-positive results. In addition, it is associated with the risk of infection of the patient with treponemes, which can lead to the development of syphilis. Therefore, at present, the luetin test is used only as an additional method for diagnosing syphilis in cases where other methods do not provide accurate results.

Article about Lusini-Lewi reactions, diagnosis of syphilis.

Syphilis is a sexually transmitted infectious disease caused by Treponema pallidum. Transmission of the infection occurs through sexual contact and contact with the blood of an infected person. Treatment of syphilis is carried out only with antibiotics, since only they can kill the pathogen and prevent the spread of infection to other organs and systems of the body. However, antibiotic therapy alone is not always sufficient to cure a patient, because there are patients whose symptoms of the disease are very mild or absent. In such cases, in order to determine the stage of the syphilitic disease and prescribe appropriate treatment, a series of laboratory tests are performed,