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HIV Antibodies, HIV-1/2, EIA, with Reflexes

Test Code


CPT Code(s)



If HIV Antibodies, HIV-1/2, EIA is Repeatedly Reactive, HIV-1/2 Antibody Differentiation will be performed at an additional charge (CPT code(s): 86701, 86702).
If HIV-1/2 Antibody Differentiation is Negative or Indeterminate, HIV-1 RNA, Qualitative, TMA will be performed at additional charge (CPT code(s): 87535).

Preferred Specimen(s)

3 mL serum

Minimum Volume

2 mL

Alternative Specimen(s)

Serum collected in a red-top tube (no gel) • Plasma collected in an EDTA (lavender-top) tube

Collection Instructions

Tube must be labeled with patient identifier and submitted only for HIV testing. HIV-1/2 Antibody Differentiation requires the original tube for testing. Tube should be spun after clotting and remain unopened.

Transport Container

Plastic screw-cap vial or original collection tube used only for HIV Screen with patient's name or ID number

Transport Temperature

Room temperature

Specimen Stability

Room temperature: 72 hours
Refrigerated: 5 days
Frozen: 30 days


Immunoassay (IA)

Performing Laboratory

Quest Diagnostics - Southwest Region

Setup Schedule

Set up: Daily p.m.


HIV antibodies may not be detected in window between infection and detection of antibody.

Reference Range(s)

HIV-1/2 Ab Screen, EIA Non-Reactive

A Non-reactive HIV-1/2 antibody result does not exclude HIV infection since the time frame for seroconversion is variable. If acute HIV infection is suspected, antibody retesting and nucleic acid amplification (HIV DNA/RNA) testing is recommended.

Clinical Significance

The combination HIV-1/HIV-2 includes detection of subtypes of HIV-1 not included in HIV-1, EIA alone. Repeatedly positive results are confirmed utilizing a different assay.

Alternative Name(s)


LOINC®' Code(s)

The Result and LOINC information listed below should not be used for electronic interface maintenance with Quest Diagnostics. Please contact the Quest Diagnostics Connectivity Help Desk for more information at 800-697-9302.

NOTE: The codes listed in the table below are not orderable Test Codes.

Result NameLOINC CodeComponent Name
70055100HIV 1/2 EIA AB SCREEN31201-7HIV 1+2 Ab

Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.

The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

LOINC assignment is based on a combination of test attributes, including the method used by the performing laboratory. For tests not performed by Quest Diagnostics, codes are assigned by the performing laboratory.

* The tests listed by specialist are a select group of tests offered. For a complete list of Quest Diagnostics tests, please refer to our Directory of Services.