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HIV Ab 1/2 & p24 Ag*

Important Note

*This test is orderable in Cerner as HIV Ab 1/2 & p24 Ag

Important: This test cannot be ordered as an add-on after initial processing due to potential carryover which can cause falsely elevated results.

Specimen Requirements

Specimen Type: Serum  

Container/Tube:  Gold SST

Specimen Volume: Full tube

Specimen Minimum Volume: 0.5 mL serum

Collection Instructions: 1. Send specimen in original tube.
2. If there is a delay in transport of >1 hour, centrifuge tube.

Specimen Transport Temperature

Refrigeration

Reference Values

Nonreactive

Day(s) Performed

Monday - Friday

Analytical Time:

1 day

Performing Laboratory

Rutland Regional Medical Center Laboratory

Test Classification and CPT Coding

CPT: 87389

LOINC: 56888-1

Order Code: RMCHIVABAG

Result Code: RMCL801916

Result Name: HIV Antibody (1/2)

Instrumentation

Roche Cobas

Reflex Testing

Positive results will be sent for HIV 1/2 AB Differentiation

Additional Information

For the qualitative determination of Human Immunodeficiency Virus (HIV) p24 antigen and antibodies to HIV Type 1 (HIV-1 group M and group O) and/or Type 2 in serum.

Specimens that are considered initially reactive for antibodies to HIV-1 and/or HIV-2 will be retested in duplicate. If one or both of the duplicates are reactive, the specimen is considered repeatedly reactive and will be sent out for confirmatory testing.

An individual who has antibodies to HIV is presumed to be infected with the virus; however, an individual who has participated in an HIV vaccine study may develop antibodies to the vaccine and may or may not be infected with HIV. Clinical correlation is indicated with appropriate counseling, medical evaluation, and possibly additional testing to decide whether a diagnosis of HIV infection is accurate.

Specimens that are initially reactive are considered negative for HIV-1/HIV-2 antibodies if both of the duplicates retest as nonreactive.