Autoantibody Profile to Autoantibodies Against Cardiac Proteins (Cardiac Autoantibody Screen)
This test measures certain antibodies your body may produce against proteins found in your heart. These antibodies can sometimes be linked to conditions affecting heart function.
["This screening helps identify potential heart-related autoimmune responses that may require further evaluation."]
Key facts at a glance
- LOINC
- 57842-7
- Short code
- RBC # Pcar Auto
- Synonyms
- RBC # Pcar Auto
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Ref low
- 4.2
- Ref high
- 5.9
- Critical range
- 2 N/A – 7 N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- automated-count
- CPT
- 85041
- SNOMED
- 900000000000003001
- 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 the presence of autoantibodies directed toward cardiac proteins, which may be associated with conditions like myocarditis, dilated cardiomyopathy, or other inflammatory heart diseases. It does not diagnose a specific condition but can flag a need for additional testing if abnormal results are found.
Why It Might Be Ordered
Your healthcare provider may order this test if you have symptoms like chest pain, fatigue, shortness of breath, or other signs of heart issues. It may also be used in research or monitoring for autoimmune-related heart conditions.
What to Expect Before the Test
No special preparation is typically needed. You may provide a blood sample, often drawn from a vein in your arm. If you are on blood thinners or have a history of bleeding disorders, let your provider know beforehand.
What to Expect During the Test
The blood sample is collected in a standard manner. The test involves analyzing the sample for specific autoantibodies using immunoassay methods. Results are usually reported as positive or negative for the presence of these antibodies.
Reference range
Adult males: 4.2-5.9; Females: 3.8-5.1 x 10^12/LN/A
No special preparation required. Stay well hydrated.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
Cardiac Autoantibody Screen
Frequently asked questions
What Does a Positive Result Mean?
Will This Test Help Diagnose My Condition?
Are There Any Risks or Side Effects?
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 17, 2026. · Read our editorial policy