HIV RNA Viral Load (Serum) – Probe Amplification (Quantitative)
This test measures the amount of HIV genetic material (RNA) in your blood to check how well your current treatment is working and monitor disease progression.
["HIV RNA levels help guide treatment decisions and track viral suppression over time."]
Key facts at a glance
- LOINC
- 41515-8
- Short code
- HIV1 RNA # SerPl Probe amp DL=75
- Synonyms
- HIV1 RNA # SerPl Probe amp DL=75
- 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-detection-limit-copies-ml
- 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 healthcare provider may order this test if you’re newly diagnosed with HIV, starting treatment, or experiencing symptoms that suggest your virus isn’t responding well to medication. It’s also used to monitor how your body is responding to therapy and adjust treatment plans as needed.
How the Test Works
A small blood sample is taken to collect a serum or plasma sample. The lab then uses a specialized probe-based amplification technique to detect and quantify the HIV RNA virus particles present in your blood. This process helps determine the viral load, or the number of virus particles in your bloodstream.
What to Expect Before the Test
No special preparation is needed for this test. You may have a slight bruise or discomfort at the needle insertion site, but most people find it quick and manageable. If you’re on blood-thinning medication, let your provider know before the test.
What the Results Mean
Results are typically reported as the number of HIV RNA copies per milliliter of blood. A very low or undetectable viral load usually means your treatment is working well. If the viral load is high, it may indicate treatment resistance or insufficient adherence to your medication.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
HIV RNA Quant
Frequently asked questions
What does a high viral load mean?
How often should I get this test?
Can lifestyle changes affect this test result?
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