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The Venereal Disease Research Laboratory test (VDRL) is a blood test for syphilis and related non-venereal treponematoses that was developed by the eponymous US laboratory. The VDRL test is used to screen for syphilis (it has high sensitivity ), whereas other, more specific tests are used to diagnose the disease.
This reaction is the foundation of “nontreponemal” assays such as the VDRL (Venereal Disease Research Laboratory) test and Rapid Plasma Reagin (RPR) test. Both these test are flocculation type tests that use an antigen-antibody interaction. The complexes remain suspended in solution and therefore visible due to the lipid based antigens.
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The rapid plasma reagin test (RPR test or RPR titer) is a type of rapid diagnostic test that looks for non-specific antibodies in the blood of the patient that may indicate an infection by syphilis or related non-venereal treponematoses. It is one of several nontreponemal tests for syphilis (along with the Wassermann test and the VDRL test).
The Sindh Institute of Skin Diseases (Urdu: سندھ ادارہ برائے امراضِ جِلد) known as Skin Hospital or Chamra Hospital (Urdu: چمڑہ ہسپتال) is a 50-bed dermatological hospital. It is the only public sector skin hospital in Karachi and is located in the Regal Chowk area. [1] [2]
In the mother, a serologic diagnosis of syphilis is made using a nontreponemal test for syphilis such as the Venereal Disease Research Laboratory test or Rapid plasma reagin (RPR) followed by a treponemal test, such as the Treponema pallidum particle agglutination assay (TP-PA) (the sequence of testing may be reversed with a treponemal test ...
Treponema pallidum, formerly known as Spirochaeta pallida, is a microaerophilic, gram-negative, spirochaete bacterium with subspecies that cause the diseases syphilis, bejel (also known as endemic syphilis), and yaws. [1]
In the early part of the twentieth century, the medical science of venereology encompassed only the five classical venereal diseases: gonorrhea, syphilis, chancroid, lymphogranuloma venereum, and granuloma inguinale (donovanosis). [6] [7] The history of virology shows that, in the first decade of the 20th century, viruses were not well understood.