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Test Code LAB5599 HIV-1/HIV-2 ANTIGEN AND ANTIBODY DIAGNOSTIC W/REFLEX CONFIRMATION

Important Note

For HIV screening, please order LAB4126: HIV-1/HIV-2 ANTIGEN AND ANTIBODY SCREEN W/REFLEX CONFIRMATION.

Positive HIV antigen/antibody tests will be sent out for confirmation (Mayo test codes HVDIP and HIVQN). This test does not differentiate between HIV-1 and HIV-2 antigens. 

Specimen Type

Preferred Specimen: EDTA Plasma* (Lavender Top Tube)
Alternative Specimen: Serum Tube (SST, Gold, Corvac, Tiger, Red Top Tube) or Whole Blood

*Mayo requires EDTA Plasma for confirmatory testing.

Specimen Volume

2 mL

Minimum Volume

1 mL
Extra sample may be needed if reflex testing is triggered.

Turnaround Time

STAT: 1 hour
Routine: 4 hours

Test Schedule

Daily

Sample Stability

Room Temp: 2 days
Refrigerated: 7 days

Specimen Processing

Centrifuge and aliquot plasma within 2 hours of collection

Reference Ranges

HIV1/2 Abs: Nonreactive

HIV-1 p24 Ag: Nonreactive

Synonyms

HIV1+2 Antibody Screen; HIV-1 p24 Antigen Screen; HIV Antibody/Antigen Combo Screen, HIV Screen, Diagnostic HIV

Test Components

HIV1/2 Antibody Screen; HIV-1 p24 Antigen Screen

CPT Codes

87389

Rejection Criteria

Cord Blood or specimens from patients under the age of 2 years old.  Plasma from any other anticoagulant other than EDTA. (Serum and whole blood is acceptable).

Limitations

This assay is not validated for individuals less than 2 years old.

The following comment will be automatically added for patients less than 2 years old: “This assay has not been validated for individuals younger than 2 years of age. Nearly all infants born to HIV-infected mothers passively acquire maternal antibody and, in some cases, will test antibody positive until age 18 months regardless of whether they are infected. For definitive diagnosis of HIV infection in early infancy, recommend performing HIV-1/HIV-2 RNA detection assays.”