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HelpTest Code LAB338 Syphilis Confirmation: VDRL with TP-PA
Useful For
Confirming reactive Syphilis IgG and IgM antibody screens
Profile Information
| Test Component | Methodology |
Available Separately |
Always Performed |
|---|---|---|---|
| VDRL (qualitative) | Microscopic Flocculation/Agglutination | No | Yes |
Testing Algorithm:
- If the VDRL screen is positive, a quantitative VDRL titer will be performed, at an additional charge.
- TP-PA testing will be performed on all serum VDRL specimens with results of reactive 2 dilutions or greater, at an additional charge. Initial results of Weakly Reactive or Reactive 1 dilutions should have a second specimen submitted.
Reflex Tests
| Test Component | Methodology |
Available Separately |
Always Performed |
|---|---|---|---|
| VDRL titer (quantitiative) | Microscopic Flocculation/Agglutination | No | No |
| TP-PA | Treponema Pallidum AB, Particle Agglutination (TP-PA) | No | No |
Performing Laboratory
Montana State Public Health Laboratory
Specimen Requirements
Specimen Type: Serum
Container/Tube: Red top or gold top
Specimen Volume: 2 mL
Collection Instructions:
- Send 2 mL serum refrigerated.
- If initial testing has been performed and this test is being used for confirmation, fill out and attach the confirmation testing form found below.
Specimen Transport Temperature
Refrigerated
Specimen Stability
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum | Ambient | 8 hours |
| Refrigerated | 1 week |
Reference Values
Nonreactive
Significant results are telephoned to the submitter.
Day(s) Test Set Up
Monday through Friday
Turnaround Time: Routinely batch tested twice per week.
Test Classification and CPT Coding
86592-Qualitative VDRL
86593-Quantitative VDRL (if indicated)
86780-TP-PA (if indicated)