Striated Muscle Antibody, IgG with Reflex to Titer

Label Mnemonic:	STMR
Epic code:	LAB1356
Downtime form:	Doctor/Provider Orders - Pathology Core and Specialty Care Nursery

Commercial Mailout Laboratory
6240-8 RCP
356-8593

Specimen(s):

Serum

Collection Medium:

Red top tube 5 mL (Clot Activator)

Minimum:

Preferred Minimum: 1 mL serum
Absolute Minimum: 0.15 mL serum

Rejection Criteria:

Plasma. Severely lipemic, contaminated, or hemolyzed specimens.

Turn Around Time:

1-5 days upon receipt at reference laboratory

Reference Range:

Screen: < 1:40 No antibody detected.
Titer: < 1:40 No antibody detected.

Comments:

Titers greater than or equal to 1:80 are suggestive of myasthenia; 
however, striated muscle antibody can be found in rheumatic fever, 
myocardial infarction, and a variety of post-cardiotomy states.  All 
positives will be titered to endpoint.

If Striated Muscle Ab is >1:40, then a titer will be added.

Methodology:

Semi-Quantitative Indirect Fluorescent Antibody

CPT Code:

86255 Striated muscle; if reflexed, add 86256 Striated muscle titer: additional charges will occur