Human Immunodeficiency Virus 1/O/2 (HIV-1/O/2) Antigen/Antibody (Fourth Generation)
FAQ
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What is an HIV 1/O/2 Antigen/Antibody Fourth Generation Test?
The HIV 1/O/2, Antigen/Antibody Fourth Generation Test, is used to diagnose both HIV-1 and HIV-2 infections, and monitor their treatment over time. It follows the guidelines for HIV testing established by the Centers for Disease Control and Prevention and can be used for adults and children at least 2 years old.
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How accurate is HIV 1/O/2 Antigen/Antibody Fourth Generation Test?
Antigen/Antibody tests performed in a lab are the most accurate type of HIV tests, with at least a 99% accuracy rate, as opposed to the rapid on-site tests, which have a lower accuracy rate.
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How soon does an Antigen/Antibody test detect HIV?
More than 99% of patients have reactive results within 45 days after HIV acquisition. Therefore, it is unlikely that an individual who has tested negative for an HIV test at least 45 days following exposure to the virus is infected with HIV.
If your test results come back positive, speak to your doctor as soon as you can for guidance.
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Does HIV have a cure?
Currently, there is no cure for HIV. However, antiviral medications can reduce the amount of HIV in your body, which helps to:
- Improve your immune system functioning
- Slow the progression of the disease
- Increase your quality of life
- Increase your life expectancy
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Do I need to visit a doctor?
No doctor visit needed.
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How do I get my results?
You get your results via email as soon as they are available.
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Does my lab prescription expire?
Your lab prescription never expires.*
- Low prices since 2005
- Same day lab order by email
- Labs within 1 mile of 90% of the US
- Lab test prescriptions NEVER expire*
- Over 650 blood work labs to choose
- Secure, encrypted & accurate testing
- Low prices since 2005
- Same day lab order by email
- Labs within 1 mile of 90% of the US
- Lab test prescriptions NEVER expire*
- Over 650 blood work labs to choose
- Secure, encrypted & accurate testing
HIV 1/2 Antigen and Antibodies, Fourth Generation (Quest Diagnostics) Same day lab order delivery
The HIV-1 Antibodies test is appropriate for exposure at least 6 months prior to testing.
Abnormal results may require further evaluation by your physician.
Alternative Name(s)
Fourth Generation HIV
4th Generation HIV
Note: Confirmation testing is performed on reactive results only if initial values fall within a designated range requiring additional confirmation.
If HIV Antigen and Antibody, 4th Generation Screen is Repeatedly Reactive, HIV-1/2 Antibody Differentiation will be performed
If HIV-1/2 Antibody Differentiation is Indeterminate or Negative, HIV-1 RNA, Qualitative, Real-Time PCR will be performed
No fasting required.
Estimated turnaround for results is 3 business days. If confirmation testing is required, the estimated time may be extended.
Human Immunodeficiency Virus 1/O/2 (HIV-1/O/2) Antigen/Antibody (Fourth Generation) (LabCorp) Same day lab order delivery
The 4th Generation HIV-1 test is appropriate for exposure at least 6 months prior to testing.
Abnormal results may require further evaluation by your physician.
Estimated turnaround for results is 3 business days. If confirmation testing is required, the estimated time may be extended.