Human T-lymphotropic virus type I/II antibody screening (serum/plasma)
This test detects antibodies to the Human T-lymphotropic virus (HTLV), which can cause serious health conditions like infections or cancers in some people.
["Screening for HTLV antibodies helps identify potential exposure and guides further medical evaluation if needed."]
Key facts at a glance
- LOINC
- 14217-4
- Short code
- HTLV I p19 Ab Ser Ql
- Synonyms
- HTLV I p19 Ab Ser Ql
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- 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 doctor may order this test if you have symptoms like persistent fatigue, muscle or joint pain, or unexplained weight loss. It’s also recommended for people in high-risk groups, such as those with certain blood disorders, those who have had multiple sexual partners, or those who’ve received blood transfusions or organ transplants in the past. Healthcare providers may also screen individuals in regions where HTLV is more common.
What to Expect During the Test
You’ll have a small needle inserted into your arm to draw blood. The blood will be sent to a lab for testing. The process takes about 15 minutes, and you can resume normal activities afterward. No special preparation is needed.
What the Test Results Mean
If the screening test is positive, your doctor will likely order a follow-up confirmatory test to check for HTLV antibodies more specifically. If you test positive, further testing and medical evaluation will determine if you need treatment or monitoring.
Common Misconceptions About HTLV
HTLV is not the same as HIV. While both viruses can cause immune system issues, they are different and have different transmission risks. HTLV is primarily spread through sexual contact, mother-to-child during childbirth, and sharing needles.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
HTLV can lead to serious health problems like HTLV-associated myelopathy (HAM), a nerve disease causing weakness and numbness, or tropical spastic paraparesis (TSP), a condition affecting movement. In rare cases, HTLV can cause a type of lymphoma or leukemia. Early detection through screening helps monitor and manage symptoms effectively.
Short name
HTLV-1/2 Antibody Screen
Frequently asked questions
What does a positive screening result mean?
How is HTLV infection treated?
Can HTLV be transmitted through casual contact?
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