Myocardial Antibody, IgG with Reflex to Titer
Ordering Recommendation

May be useful for the evaluation of autoimmune or inflammatory heart disease especially post cardiotomy or post myocardial infarction syndromes. Negative results do not rule out inflammatory heart disease.

Semi-Quantitative Indirect Fluorescent Antibody
1-4 days
New York DOH Approval Status
This test is New York DOH approved.
Submit With Order
ARUP Consult®
Disease Topics
Specimen Required
Patient Preparation
Serum separator tube. 
Specimen Preparation
Separate serum from cells ASAP or within 2 hours of collection. Transfer 1 mL serum to an ARUP Standard Transport Tube. (Min: 0.15 mL) 
Storage/Transport Temperature
Unacceptable Conditions
Plasma. Contaminated, hemolyzed, or severely lipemic specimens. 
After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles) 
Reference Interval
< 1:20 No antibody detection
Interpretive Data

Compliance Statement A: Analyte specific reagents (ASR) are used in many laboratory tests necessary for standard medical care and generally do not require U.S. Food and Drug Administration (FDA) approval or clearance. This test was developed and its performance characteristics determined by ARUP Laboratories. The U.S. Food and Drug Administration has not approved or cleared this test; however, FDA clearance or approval is not currently required for clinical use. The results are not intended to be used as the sole means for clinical diagnosis or patient management decisions. This test should not be regarded as investigational or for research use.

Myocardial antibodies are present following myocardial infarction (28-31%), acute rheumatic fever (25-43%) and in post-pericardiotomy syndrome.  All positives are titered to endpoint. If Myocardial Ab is  1:20, then a titer will be added. Additional charges apply.
CPT Code(s)
Component Test Code*Component Chart NameLOINC
0050743Myocardial Antibody, IgG Screen35277-3
0050744Myocardial Antibody, IgG Titer56633-1
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
  • Anti-Cardiac Muscle Antibodies
  • Anti-Heart Antibodies
  • Anti-Interfibrillar
  • Anti-Myocardial Antibodies
  • Anti-Sarcolemma
  • Cardiac Muscle Antibodies
  • CMA
  • Myocardial Ab screen IgG