Specimen:

Serum

Collection Medium:

Minimum:

Adult Preferred Minimum: 1 mL serum
Adult Absolute Minimum:  0.5 mL serum
Pediatric Minimum: 0.15 mL serum

Rejection Criteria:

Plasma.  Severely lipemic, contaminated, or hemolyzed specimens.

Analytic Time:

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:

Indirect Fluorescent Antibody

CPT Code:

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