PrEP HIV-1/2 Antigen/Antibodies, 4th Gen, with Reflexes (Full Algorithm)
Quest Diagnostics
Sample type: Serum
Requires fasting: No
Phlebotomy required
Details
PrEP HIV-1/2 Antigen/Antibodies, 4th Gen, with Reflexes (Full Algorithm) - This test is used to diagnose HIV-1 and HIV-2 infection, including acute infection, and to differentiate HIV-1 from HIV-2. It is consistent with the HIV diagnostic algorithm recommended by the Centers for Disease Control and Prevention. This diagnostic algorithm is NOT intended for patients currently on PrEP as these patients require concurrent HIV Antigen/Antibody and HIV-1 RNA tests.
Reflex testing uses predefined clinical logic to automatically order one or more follow-up tests based on the initial test results. Reflex tests are performed automatically without the intervention of the ordering practitioner. They are conducted using the same sample your Patient already provided. If reflex tests are required, there will be additional charges.
Initial test
- HIV 1+2 Ab+HIV1 p24 Ag
Possible reflex biomarkers
- HIV-1 Ab
- HIV-2 Ab
- HIV 1 RNA
Estimated days for results: Results should be available within 2 - 5 business days after samples are received at the lab.
PrEP HIV-1/2 Antigen/Antibodies, 4th Gen, with Reflexes (Full Algorithm) - This test is used to diagnose HIV-1 and HIV-2 infection, including acute infection, and to differentiate HIV-1 from HIV-2. It is consistent with the HIV diagnostic algorithm recommended by the Centers for Disease Control and Prevention. This diagnostic algorithm is NOT intended for patients currently on PrEP as these patients require concurrent HIV Antigen/Antibody and HIV-1 RNA tests.
If the HIV-1/HIV-2 Antigen/Antibody test is positive, an antibody-based HIV-1/HIV-2 test is performed (at additional charge) to confirm infection and differentiate between HIV-1 and HIV-2. If the antibody-based HIV-1/HIV-2 test is Negative or Indeterminate, an HIV-1 RNA test will be performed (at additional charge) to identify patients with acute, early HIV-1 infection.
For determination of HIV status for patients who have taken oral PrEP within 3 months, or injectable PrEP within 12 months, please order PrEP HIV-1/2 Antigen and Antibodies, Fourth Generation, Screen and HIV-1 RNA.
2–5 business days
Blood Draw Options with Fullscript
Fullscript offers several convenient phlebotomy options to complete your lab testing:
Quest Diagnostics Patient Service Centers (PSC)
- Location: Visit a nearby Quest Diagnostics Patient Service Center.
- Cost: $10 sample collection fee (paid during lab order checkout).
- Scheduling: Schedule your appointment here. Appointments are recommended to reduce wait times. Walk-ins are accepted, but may experience delays. Aim to arrive 10 minutes before your appointment.
- Collection Instructions:
- Bring a valid ID.
- Bring your digital or printed requisition form, available in the Labs tab of your Fullscript account.
- Check-in: Scan the QR code from your confirmation email or follow kiosk instructions.
- More Info: Quest Diagnostics blood draw guide
Getlabs Mobile Phlebotomy
- Location: Sample collection at your home or office.
- Cost: $85 sample collection fee (paid during lab order checkout).
- Availability: Available in most locations – enter your ZIP code during checkout to confirm.
- Scheduling: Schedule your appointment here through your Fullscript account.
- Collection Instructions:
- Have your digital or printed requisition form and valid ID ready.
- Your phlebotomist will contact you by phone to coordinate arrival.
- More Info: Getlabs blood draw guide
- Preferred Specimen(s): 3 mL serum
- Alternative: NA
- Minimum Volume: 2 mL
- Collection Instructions: NA
- Transport Container: Transport tube
- Transport Temperature: Room Temperature
- Specimen Stability:
- Room temperature: 72 hours
- Refrigerated: 5 days
- Frozen: 30 days
- Reject Criteria:
- Gross hemolysis • Frozen specimens submitted in original collection container
State restrictions:
Patient can't order this test if they are located in Puerto Rico, Hawaii, Rhode Island, New Jersey, or New York
