Wasserman reaction
Noun: A specific, standardized medical blood test historically used as a primary diagnostic tool for detecting syphilis infection. The test works on the principle of complement fixation, identifying the presence of antibodies produced in response to the bacterium Treponema pallidum. A positive result indicates a current or past infection with syphilis.
The term is used specifically in medical, historical, and diagnostic contexts to refer to this classic serological test. - It is typically used as a singular noun phrase: the Wasserman reaction. - It can be reported as positive, negative, or reactive.
- The diagnosis was confirmed by a Wasserman reaction.
- A positive Wasserman reaction led to immediate treatment.
- Modern tests have largely replaced the Wasserman reaction for screening.
- Historical Context: The term is often used when discussing the history of medicine or the evolution of diagnostic techniques for sexually transmitted infections.
- Technical Reporting: In older medical literature, results might be reported quantitatively with titers (e.g., "The Wasserman reaction was positive at a dilution of 1:64").
- Wassermann test: A fully synonymous term.
- Complement fixation test (CFT): The broader category of immunological tests to which the Wasserman reaction belongs.
- Serological test for syphilis (STS): A more general modern term encompassing the Wasserman reaction and its successors like the VDRL and RPR tests.
- Wassermann test
- Classic serological test for syphilis
While the core meaning is fixed, it is crucial to understand its historical significance. The Wasserman reaction was a groundbreaking but non-specific test; a positive reaction could sometimes occur in other conditions (a false positive), which is a key point in its clinical interpretation.
- a blood test to detect syphilis; a complement fixation test is used to detect antibodies to the syphilis organism treponema; a positive reaction indicates the presence of antibodies and therefore syphilis infection