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HIV Viral Load and CD4 Cell Count Panel (Serum/Plasma)

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

This test measures two key aspects of your HIV status: how much virus is in your blood and the number of your immune cells (CD4 cells) that help fight infection.

Quick summary

Monitoring your HIV progression and treatment effectiveness starts here.

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

Key facts at a glance

LOINC
48548-2
Short code
LIVINGWITHHIVLIVHIVPANEL
Synonyms
—
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
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

What Does This Test Measure?

The panel includes two main tests: **HIV viral load** (how much virus is present in your blood) and **CD4 cell count** (your immune cell count). Viral load helps track how well your medications are working to reduce virus levels, while CD4 count assesses your immune system strength.

Why Is This Test Important?

Regular testing helps doctors manage your HIV treatment, prevent complications, and ensure you stay healthy. High viral loads or low CD4 counts may signal the need for adjustments in your care plan.

How Is the Sample Collected?

A blood sample is drawn from a vein in your arm. This is a standard procedure and may cause a slight pinch, but it’s usually over quickly. The blood is sent to a lab for testing.

What Do the Results Mean?

Results show two values: **viral load** (often measured in copies per milliliter) and **CD4 count** (number of immune cells per microliter). Lower viral loads and higher CD4 counts generally indicate better control of HIV and a stronger immune system.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance: Monitoring HIV Progression and Treatment Response

Short name

HIV Panel

Frequently asked questions

How often should I get this test?
Your doctor will determine the timing based on your treatment plan, but typically, viral load tests are done every 3–6 months, and CD4 counts may be checked less frequently unless there are changes in your health.
What if my results are outside the expected range?
If your viral load is very high or your CD4 count is low, it may mean your treatment isn’t working as well as planned. Your healthcare provider will discuss next steps, such as adjusting medications or further testing.
Can I eat or drink before this test?
You can eat and drink normally before the blood draw, as it’s a fasting requirement for this test. However, always follow your doctor’s specific instructions.
  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