Skip to content

HIV Antigen/Antibody Combo

HIV Screen

Testing Information

Sample Type
Test Codes
CPT Code
87389, Confirmation:86701, 86702
Testing Area
Core Lab - Chemistry
Test Methodology
Abbott Alinity - Chemiluminescence Immunoassay
Reference Range
Expected Turnaround Time
Results Available 24 hours from Receipt
Specimen Collection Criteria
Collect one gold top SST tube (minimum whole blood: 4 mL). Let specimen clot for 30-60 minutes and then centrifuge to separate serum from cells. Refrigerate after centrifugation.
Rejection Criteria
Grossly hemolyzed specimens, quantity not sufficient, grossly lipemic specimens, improperly labeled
Specimen Validity and Retention
Centrifuged SST Tubes:Room Temperature (20-25°C): 2-4 hoursRefrigerated (2-8°C): 7 DaysFrozen (-20°C or greater): UnacceptableSerum Aliquots:Room Temperature (20-25°C): 2-4 hoursRefrigerated (2-8°C): 7 daysFrozen (-20°C or greater): 7 daysSpecimens retained for 7 days after testing
Courier Transportation
Transport centrifuged tube refrigerated (2-8°C)
Clinical Utility
The HIV Combo test detects both HIV-1 p24 antigen and antibodies to HIV-1 and HIV-2.
Special Notes
HIV is a reportable infection. Positive/reactive results will be communicated to the Michigan Department of Health and Human Services.Positive results will automatically reflex to a confirmation to differentiate between HIV-1 and HIV-2.