Anti-HIV-1 Antibody Titration (Serum/Plasma)
This test measures the amount of antibodies your body produces in response to the HIV virus. It helps determine if you have been exposed to HIV and whether your immune system is responding.
["Assesses HIV exposure and immune response through antibody levels over time."]
Key facts at a glance
- LOINC
- 15471-6
- Short code
- EIV A2 Ab Titr Ser HAI
- Synonyms
- EIV A2 Ab Titr Ser HAI
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- hai
- 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 This Test Measures
The test detects HIV-specific antibodies in your blood or plasma. Antibodies are proteins your immune system makes to fight infections. Over time, your body may produce more or less of these antibodies depending on how your immune system reacts to HIV. Titration helps track changes in antibody levels, which can inform further medical evaluation.
Why It’s Done
Your healthcare provider may order this test if you have symptoms of HIV infection, have been exposed to HIV, or are part of a study to monitor immune response. It’s also used in some cases to confirm or rule out HIV after initial screening.
Sample Collection and Preparation
A blood sample is drawn from a vein in your arm. The blood is then processed to separate serum or plasma, which is tested for HIV antibodies. This process ensures accurate measurement of antibody levels.
What to Expect Before the Test
There are no special preparations needed. You may have a small bandage on the site where the blood was drawn, but otherwise, you can resume normal activities immediately.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
HIV Antibody Test (Titration)
Frequently asked questions
If antibody levels are detected, it suggests past or current exposure to HIV. Higher or fluctuating levels may indicate an active immune response, while lower levels could mean the body is less reactive. This information helps guide treatment decisions, such as starting antiretroviral therapy (ART) or monitoring disease progression.
How does antibody titration differ from a standard HIV antibody test?
Can this test be used to diagnose HIV immediately?
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