HIV RNA Viral Load by Nucleic Acid Amplification Test (Serum/Plasma)
This test measures the amount of HIV genetic material (RNA) in your blood or plasma to help track how well your treatment is working and monitor disease progression.
["HIV RNA testing helps guide your HIV treatment plan and check for viral resistance over time."]
Key facts at a glance
- LOINC
- 42917-5
- Short code
- HIV1 RNA CSF Ql NAA+probe
- Synonyms
- HIV1 RNA CSF Ql NAA+probe
- Category
- chemistry
- Sample
- csf
- Container
- Sterile tube
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- probe-amp-tar
- CPT
- 86701
- Specimen volume
- 1-2 mL
- Stability
- Immediate analysis required, Refrigerated: 1h
- Hemolysis max
- 200
- TAT
- 4–24 hours
- Order
- routine
Why Is This Test Done?
Your healthcare provider may order this test to monitor your HIV infection during treatment. It helps determine if your current medications are effective and if your virus is becoming resistant to them. This test is often used shortly after starting treatment to establish a baseline and then regularly to track changes in your viral load.
What Does a High or Low Viral Load Mean?
A high viral load means there are many copies of the HIV virus in your blood. This can indicate that your treatment isn’t working well, or your virus may be spreading more easily to others. A low viral load (close to zero) suggests your treatment is controlling the virus effectively, reducing your risk of spreading it.
How Is the Test Performed?
A small blood sample is taken from a vein in your arm. The blood is then processed to separate the plasma, where the viral RNA is measured using a specialized lab technique that detects and quantifies the genetic material of HIV.
What Should You Expect Before the Test?
There are no special preparations needed for this test. You may have some mild discomfort or bruising at the injection site, but it usually goes away quickly. If you’re on blood-thinning medication, let your provider know before the test.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Regular HIV RNA testing is crucial for managing HIV. A consistently low viral load (undetectable) is strongly linked to better health outcomes and a reduced risk of transmitting HIV to others. If your viral load rises unexpectedly, it may signal treatment failure or resistance, prompting adjustments to your medication plan. This test also helps identify early signs of viral resistance, which can guide more targeted treatment options.
Short name
HIV RNA Load
Frequently asked questions
How often should I expect this test?
What does an undetectable viral load mean?
Can lifestyle changes affect my HIV RNA test results?
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