HIV p24 Antigen/Antibody With Reflex to Confirmation
Also known as: HIV Antigen/Antibody, HIV-1, HIV-2, Human Immunodeficiency Virus, p24
Use
CDC-recommended algorithm for laboratory diagnosis of HIV infection, including acute and primary infection.
Special Instructions
This test requires a dedicated, unopened, gel-barrier tube to be sent directly to the testing facility. Patients should be asked about biotin supplementation as high doses can interfere with the test results. It is recommended to stop biotin consumption at least 72 hours before sample collection.
Limitations
Reactive specimens must be confirmed by additional supplemental tests. A negative result does not rule out HIV-1 and/or HIV-2 infection, as the test may not detect low levels of the marker or when the marker is absent during certain stages of infection. The assay's performance characteristics for cadaveric specimens have not been determined.
Methodology
Immunoassay (EIA)
Biomarkers
LOINC Codes
- 75622-1
- 56888-1
- 68961-2
- 81641-3
- 80203-3
- 25835-0
- 69353-1
- 85380-4
Result Turnaround Time
1-2 days
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
2 mL
Minimum Volume
1 mL
Container
Gel-barrier tube
Collection Instructions
Usual blood collection technique. Do not freeze serum gel tubes; send to the lab refrigerated.
Patient Preparation
Patients should stop biotin consumption at least 72 hours before sample collection.
Storage Instructions
Refrigerate.
Causes for Rejection
Specimen aliquot; specimen grossly hemolyzed; specimen in a container other than those listed; received outside of specimen and/or storage and/or labeling requirements
Stability Requirements
| Temperature | Period |
|---|---|
| Refrigerated | 7 days |
| Frozen | 14 days |