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HIV-1 RNA Viral Load by Nucleic Acid Amplification Probe Test

Published: August 9, 2026Updated: August 16, 2026

This test measures the amount of HIV-1 genetic material (RNA) in your blood to help monitor how well your treatment is working.

Quick summary

This test helps track HIV progression and guides treatment decisions by detecting viral activity in your bloodstream.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
79379-4
Short code
HIV 1 RNA+proviral DNA Plas Ql NAA+probe
Synonyms
HIV 1 RNA+proviral DNA Plas Ql NAA+probe
Category
chemistry
Sample
plasma
Container
Lavender-top (EDTA) or Green-top (Heparin)
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 Is This Test Done?

Your healthcare provider may order this test if you’re on HIV treatment to check if your virus levels are low enough (undetectable) or if your treatment needs adjustment. It’s also used during diagnosis or when you’re switching medications.

How Is the Sample Collected?

A small amount of blood is drawn from a vein in your arm by a healthcare professional. The blood sample is sent to a lab for testing.

What Does a Low or High Viral Load Mean?

A low viral load (typically below 200 copies/mL) usually means your treatment is working well, and your immune system is stronger. A high viral load (above 1,000 copies/mL) may indicate treatment resistance or poor adherence to your medication.

What Are the Limitations?

This test measures RNA, which can change quickly due to treatment or other factors. False results may occur if you have recent blood transfusions, infections, or certain medications. Always follow up with your provider for accurate interpretation.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance: Monitoring HIV Treatment Effectiveness

Short name

HIV RNA Viral Load

Frequently asked questions

How often do I need this test?
Your provider will determine the frequency based on your treatment plan. Typically, it’s done every 3–6 months if your viral load is stable, but more often if you’re adjusting medications or experiencing symptoms.
What if my viral load is undetectable?
An undetectable viral load means your HIV is under control, and you’re at very low risk of transmitting the virus to others. However, it’s important to continue taking your medications as prescribed and stay in regular check-ups.
Can lifestyle changes affect this test result?
Yes, factors like recent blood transfusions, certain medications (e.g., antibiotics), or infections can temporarily affect RNA levels. Avoiding these factors before testing can help ensure accurate results.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

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.

Medical Disclaimer

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