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Serum or plasma substance concentration for a specific protein biomarker (likely related to cardiac or vascular function)

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

This test measures a protein in your blood that may help assess heart or blood vessel health. It could be part of a broader evaluation for conditions like heart failure or vascular disease.

Quick summary

["Early detection of potential heart or blood vessel issues may be possible with this test."]

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

Key facts at a glance

LOINC
22361-0
Short code
HTLV I+II Ab CSF Ql
Synonyms
HTLV I+II Ab CSF Ql
Category
chemistry
Sample
csf
Container
Sterile tube
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Specimen volume
1-2 mL
Stability
Immediate analysis required, Refrigerated: 1h
Hemolysis max
200
TAT
4–24 hours
Order
routine

What This Test Measures

This test detects the presence or level of a protein linked to heart or blood vessel function. The exact protein may be involved in processes like inflammation, muscle damage, or fluid balance in the heart. Some biomarkers like troponin are well-known for heart-related issues, but this test could be for a different but related protein.

Why It Might Be Ordered

Your healthcare provider may order this test if you have symptoms like chest pain, shortness of breath, or if you’re at higher risk for heart problems. It could also be part of routine monitoring for conditions like heart failure or after a heart attack.

Sample Collection and Preparation

A blood sample is taken from a vein, usually in your arm. The blood is processed into either serum (after clotting) or plasma (using an anticoagulant). The test may be done on fresh or stored samples, depending on the lab’s protocol.

Test Results Interpretation

Results are qualitative (present/absent) or semi-quantitative (approximate levels). High or abnormal levels may signal potential heart or blood vessel concerns, but interpretation depends on clinical context and other test results.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Cardiac biomarker screening (qualitative or semi-quantitative)

Frequently asked questions

What Does a Positive or Abnormal Result Mean?
An abnormal result may suggest increased strain on your heart or blood vessels, but it doesn’t confirm a specific diagnosis. It often prompts further evaluation, such as additional tests or a consultation with a specialist.
Can I Avoid This Test?
No, this test may be necessary for your care plan. Your healthcare provider will explain why it’s needed and how it fits into your overall treatment.
How Often Will I Need This Test?
Frequency depends on your health status and treatment plan. Your provider will let you know how often you need follow-up testing, which could range from once to multiple times a year.
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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