HIV-1 Subtype Detection by Nucleic Acid Amplification Probe (Serum/Plasma)
This test checks for specific types (subtypes) of the HIV-1 virus in your blood using a molecular method to help determine which subtype may be present if infection is confirmed by other tests.
["Helps healthcare providers tailor treatment and monitor response to antiretroviral therapy based on subtype identification."]
Key facts at a glance
- LOINC
- 73658-7
- Short code
- HIV 1 subtype Spec NAA+probe
- Synonyms
- HIV 1 subtype Spec NAA+probe
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- probe-amp-tar
- CPT
- 86701
- Specimen volume
- 5 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
Why This Test Is Done
Your doctor may order this test if they suspect HIV-1 infection and want to identify the subtype of the virus. Subtype identification can influence treatment choices, especially in regions where certain subtypes are more common.
What to Expect Before the Test
No special preparation is needed. You’ll provide a blood sample (serum or plasma) via a simple venipuncture. The sample is processed in a lab to detect viral genetic material.
How the Test Works
The test uses a nucleic acid amplification probe to detect HIV-1 genetic sequences. This method is highly sensitive and specific, allowing for subtype classification based on viral genetic markers.
What the Results Mean
Results indicate the presence of a specific HIV-1 subtype if detected. A negative result means no subtype was identified in the sample. Results are critical for guiding treatment decisions, such as selecting medications effective against the subtype.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Identifying the HIV-1 subtype assists healthcare providers in selecting antiretroviral therapy (ART) that is most likely to be effective against the virus. Some subtypes may respond differently to certain drugs, and subtype information can also help monitor viral resistance over time.
Short name
HIV Subtype Test (NAAT)
Frequently asked questions
What does a positive result mean?
How long does it take to get results?
Is this test covered by insurance?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy