ARUP's Laboratory Test Directory

Myasthenia Gravis Panel (Striated Muscle Antibody, IgG with Reflex to Titer) : 0080177

Mnemonic: MYAS PAN

Methodology: Indirect Fluorescent Antibody/Radioimmunoassay
Performed: Mon-Fri
Reported: 1-5 days
Specimen Required: Collect:  One 4 mL serum separator tube.

Transport:  1 mL serum at 2-8°C. (Min: 0.65 mL)  Submit specimen in an ARUP Standard Transport Tube.

Pediatric Collection/Transport:  0.65 mL serum at 2-8°C.

Unacceptable Conditions:  Plasma. Hemolyzed, lipemic, or contaminated specimens.

Stability:  After separation from cells: Ambient: 2 hours; Refrigerated: 1 week; Frozen: 1 month
Reference Interval:
 
Test Number Components Reference Interval
0099580Acetylcholine Receptor Blocking Antibody Negative: 0-15% blocking
Indeterminate: 16-24% blocking
Positive: 25% or greater blocking
 Acetylcholine Receptor Modulating Antibody Negative: 0-20% modulation
Indeterminate: 21-25% modulation
Positive:  26% or greater modulation
0080009Acetylcholine Receptor Binding Antibody Negative: 0.0-0.4 nmol/L
Positive:  0.5 nmol/L or greater
 Striated Muscle Screen < 1:40 No antibody detected
 Striated Muscle Antibody, IgG Titer < 1:40 No antibody detected

Note: If Striated Muscle Ab is greater than or equal to 1:40, then a titer will be added.
CPT Code(s): 83519 ACHR Binding Ab; 83519 ACHR Blocking Ab; 83519 ACHR Modulating Ab; 86255 STMR screen; If reflexed, add 86256 STMR titer
 
 

 

 

 
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