|Alternate:||Rapid Plasma Reagin; Syphilis; Standard Test for Syphilis (STS)|
|Includes:||RPR. All reactive tests are titered and shipped out for confirmation by FTA-ABS testing.|
|Available:||Tests are batched and run weekly|
|Container:||Red top tube or 2 serum separator microtainers|
|Rejection:||Gross hemolysis or gross lipemia.|
|Uses:||Screening test for syphilis.|
|Limitations:||Certain disease states such as measles, chicken pox, viral pneumonia, upper respiratory infections, smallpox vaccinations and pregnancy may yield a false positive reaction. Chronic false positive of > 6 months can be associated with SLE, metastatic carcinoma, rheumatoid arthritis, serum protein abnormalities, rheumatoid factors and narcotic addiction. Reactive tests due to related treponemal infections will also occur. In latent syphilis, and in a month to 2 years after successful treatment, the RPR may become nonreactive. Cannot be performed on spinal fluid.|
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