What is STS blood test?
A serologic (ser-o-loj ic) test for syphilis (sif-uh-lus), also called STS, is a blood test to find if syphilis is present. Syphilis is an infection that is spread through sexual contact. There are several different blood tests to find syphilis and STS refers to all of them.
What are the serological tests of syphilis?
Serological tests are divided into two types: nontreponemal and treponemal. Nontreponemal tests include the rapid plasma reagin (RPR) test and the Venereal Disease Research Laboratory (VDRL) test, both of which are based on the detection in the blood of syphilis reagin (a type of serum antibody).
What does STS stand for syphilis?
Serological test for syphilis enzyme immunoassay (STS-EIA). It tests for syphilis antibodies. If it is positive, this could mean that you’ve had syphilis in the past, or that you have it now. It could also be a false positive. The sample will be sent for two more tests, including one to confirm the positive result.
Is a serological test carried out for diagnosis of syphilis?
Two types of serologic tests must be used to diagnose and to determine the stage of syphilis: nontreponemal tests and treponemal tests.
What is a PK TP test?
Method. Beckman PK-TP Syphilis Screen. Test Information. Assay uses an automated microplate system for the qualitative detection of Treponema pallidum IgG and IgM antibodies in human serum or plasma. The assay is not used for cadaveric donor samples.
What does a positive RPR blood test mean?
A positive test result may mean that you have syphilis. If the screening test is positive, the next step is to confirm the diagnosis with a more specific test for syphilis, such as FTA-ABS. The FTA-ABS test will help distinguish between syphilis and other infections or conditions.
What is serology testing?
About CDC’s serologic test CDC’s serologic test is an enzyme-linked immunosorbent assay (ELISA)-based test to detect SARS-CoV-2 antibodies in serum or plasma components of blood.
What is serological diagnosis?
Serological diagnosis is based on either the demonstration of the presence of virus-specific IgM antibodies or a significant increase in the levels of specific IgG antibodies. Immunoassays are the most commonly used serological assays.
What is the confirmatory test for RPR?
FTA-ABS is the most sensitive test in all stages of syphilis, and is the best confirmatory test for a serum reactive to a screen such as RPR or VDRL. FTA-ABS antibodies rise more quickly in primary syphilis and remain positive in tertiary syphilis.
What STS means?
Science, Technology and Society (STS) is an interdisciplinary field that studies the conditions under which the production, distribution and utilization of scientific knowledge and technological systems occur; the consequences of these activities upon different groups of people.
Is RPR a serology test?
Normal: Non-Reactive; See Important Comments. The Rapid Plasma Reagin (RPR) test is a nontreponemal test detecting antibodies (reagin) reacting with the cardiolipin-lecithin-cholesterol antigen.
What testing methods are used to detect syphilis?
Direct diagnosis Dark-field microscopy Direct fluorescent antibody test for Treponema pallidum Nucleic acid amplification (PCR based) methods. It is based on serological tests for the detection of antibodies. Serological testing is the mainstay in the laboratory diagnosis and follow-up of syphilis.
How accurate is the test for syphilis?
Syphilis. The most common syphilis test is designed to detect the presence of antibodies in the blood. Doctors cannot always control the outcome of this test, so science has been struggling for years to introduce a better diagnostic solution. According to one study, the accuracy of this test should be around 85%.
What to know about RPR testing for syphilis?
The RPR test measures antibodies that are present in the blood of someone who has syphilis, rather than the bacterium that causes the disease. It can also be used to check the progress of treatment for active syphilis.
Will I always test positive for syphilis?
A positive FTA-ABS test result (for the most part) indicates that the patient has (at some point) been infected with syphilis. However, patients who have had syphilis will always test positive using FTA-ABS — even when the disease has been successfully treated.