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Serum or plasma concentration of a substance related to cardiac risk assessment (e.g., a marker of inflammation or fibrosis)

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

This test measures a specific substance in your blood that may help assess your risk for heart disease or other cardiovascular conditions. It’s often used alongside other tests to evaluate overall heart health.

Quick summary

["This test helps identify potential risks for heart-related issues by detecting specific blood markers."]

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

Key facts at a glance

LOINC
42233-7
Short code
nAChR Ab Ser-sCnc
Synonyms
nAChR Ab Ser-sCnc
Category
coagulation
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 Might Be Ordered

Your healthcare provider may recommend this test if you have risk factors for heart disease, such as high blood pressure, diabetes, high cholesterol, a family history of heart problems, or if you’ve already experienced heart-related symptoms. It may also be used during routine check-ups or to monitor conditions like chronic kidney disease or heart failure.

What to Expect Before the Test

No special preparation is usually needed, but you may be asked to fast for 8–12 hours before the test if it involves a blood draw. If you’re on blood thinners or certain medications, let your provider know. Avoid strenuous activity the day before.

What Happens During the Test

A healthcare professional will draw a small amount of blood from a vein in your arm. The sample is then sent to a lab for analysis. The test typically takes a few minutes, and you may feel slight discomfort but no lasting effects.

What the Results Mean

Results are compared to standard ranges for your age, sex, and overall health. Elevated levels of this marker may signal inflammation, fibrosis, or other underlying issues linked to heart disease. Your provider will discuss these findings with you in detail.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

This test helps detect subtle changes in your blood that may indicate early signs of heart strain, inflammation, or fibrosis—conditions that can worsen over time if left unaddressed. It’s particularly useful for monitoring patients with known cardiovascular risk factors or those undergoing treatments for heart-related conditions.

Short name

Cardiac risk marker concentration

Frequently asked questions

What does a high or low result mean?
A high result may suggest increased inflammation, fibrosis, or other stress on your heart, which could point to conditions like coronary artery disease, heart failure, or chronic kidney disease. A low result might indicate normal function but doesn’t rule out risk entirely.
Does this test replace other heart health screenings?
No, this test is one tool among many. It’s often used alongside cholesterol tests, blood pressure checks, and imaging studies (like an echocardiogram) to get a full picture of your heart health.
How often should I get this test?
Your provider will determine the frequency based on your health status. Typically, it may be recommended annually or more often if you have known risk factors or conditions requiring monitoring.
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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