Syphilis treponemal antibody test (total)
Quick answer: This blood test looks for antibodies against Treponema pallidum, the bacterium that causes syphilis. Doctors order it to screen for syphilis, including in pregnancy, or to confirm a reactive VDRL.
- SampleBlood
- TakesAbout 5 minutes
- Before the testNo special preparation is usually needed.
- In fertility careSyphilis is screened for early in pregnancy and often before IVF, as treatment prevents it from passing to the baby.
How the test is done
- 1You sit and your arm is supported
- 2A vein inside your elbow is cleaned
- 3A needle draws a tube of blood
- 4The lab runs an automated test for total treponemal antibodies
What your results can mean
Reading your report
This antibody often stays positive after treatment, so a positive result is read with a VDRL or RPR test by your doctor.
If the result is outside the usual range
A positive result shows infection with syphilis at some time, current or past, and is usually followed by a VDRL or RPR to check activity. A negative result usually rules out syphilis unless exposure was very recent.
Who usually has this test
People being screened for syphilis, including in pregnancy and before IVF, and people confirming a reactive VDRL.
Risks and aftercare
A small bruise can appear; if the result is positive, your doctor will also talk about partner testing.
Names and options
Also called: TP antibody, syphilis antibody, Treponema pallidum antibody, anti-TP
Options
- Total antibodies
- TP antibodies
Listed by the hospital as
- SYPHILIS ANTIBODIES TREPONEMA (TOTAL)
- SYPHILISTP ANTIBODIES
Questions about this test
How is this test different from VDRL?
This test looks for antibodies to the syphilis bacterium itself, so it is more specific. VDRL measures a less specific antibody but is useful for following treatment.
Why do some labs screen with a treponemal test first?
Automated treponemal tests are sensitive and suit large numbers of samples. A positive result is then followed by a VDRL or RPR.
Does a positive result mean I need treatment again?
Not always. If you were treated before, the antibody often stays positive. Your doctor looks at the VDRL titre and history to decide.
Related tests
Tamara Hospital & IVF Centre, Rajajinagar
34/3, 10th Cross Road, opp. Vardhaka Sardar Patel School, 1st N Block, 2nd Stage, Rajajinagar, Bengaluru 560010
The hospital is open 24 hours. Call before you come to check the timing for your scan or sample collection.
Get directions ↗IVF Pulse fertility care at Tamara Hospital →
Reception
Waiting area
IVF lab
This page explains each test in general terms so you know what to expect. It is not medical advice: your doctor decides which tests you need and what your results mean. Reference ranges differ between laboratories. Updated 4 November 2026.