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Doctor insights on: Syphilis Detectable Blood Test

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How long does it take for syphilis to be detectable in a blood test?

How long does it take for syphilis to be detectable in a blood test?

Weeks to months: Testing for syphillis relies on both non-specific tests that can be falsley +or - and more specific germ tests as backup. A + or rising level of a screening test is confirmed by a germ test. The most specific test is finding the germ in material from a lesion. Since transmission ~30% per contact with an infected source, a single dose of penicillin is often given as early as exposure is suspected. ...Read more

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Dr. H. Hunter Handsfield
495 doctors shared insights

Syphilis (Definition)

Syphilis is a sexually transmitted disease involving a ...Read more


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I think that I might have syphilis. Where is a blood test taken?

I think that I might have syphilis. Where is a blood test taken?

Your doctor: Your doctor can order a blood test and most hospital labs are capable for performing the test. A community health clinic may offer the service. ...Read more

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What is a tpha quantitative blood test? Can this test detect latent stage syphilis?

What is a tpha quantitative blood test? Can this test detect latent stage syphilis?

Yes it can: The TPHA test (Treponema pallidum hemagglutination) is a confirmatory test for syphilis. Usually it is done only after a positive screening test, such as the VDRL, RPR, or an EIA test. If you have had negative results on one of these plus the TPHA, you can be 100% certain you don't have syphilis and probably never did. ...Read more

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How much time does it take for syphilis to show up in a blood test?

How much time does it take for syphilis to show up in a blood test?

Syphilis: Signs/symptoms of Syphilis may occur anytime from 3-90 days after exposure, though usually around 3 weeks. The blood test will likely be positive in this time frame. Many people are infected, however, and have no symptoms at all. ...Read more

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Can RPR blood test be able to detect if you have syphilis years ago?

Depends: Rpr tends to decrease in value following successful treatment of syphilis, though it can remain positive for a long time. An other test, specific for treponemal antibodies, generally stays positive. ...Read more

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How soon does syphilis show up in a blood test?There are diff names for certain tests, does it matter what test?Do they detect all in same time frame?

How soon does syphilis show up in a blood test?There are diff names for certain tests, does it matter what test?Do they detect all in same time frame?

Syphilis: Usually within the first six weeks after a possible exposure. Syphilis is unique in that when one is infected in their mouth, vagina or rectum they may miss the first stage of syphilis because the sore it causes does not hurt. If one has an unexplained sore in this scenario then testing definitely should happen. But, in general six weeks. ...Read more

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Does herpes br mistaken for syphilis in a blood test?

No: The tests for herpes simplex virus (herpes) and t. Pallidum (syphilis) are completely different and cannot be confused or mistaken for one another in a blood test. ...Read more

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Would 28 days after exposure syphilis blood test be accurate and when you have a lesion does that mean syphikis is detect. In blood?

 Would 28 days after exposure syphilis blood test be accurate and when you have a lesion does that mean syphikis is detect. In blood?

May be: The test for syphilis may be positive 28 days after exposure, but a negative result would not rule infection and you should repeat the test in three months. It would be prudent to see your doctor immediately if you have a lesion. ...Read more