Test Overview
Test Methodology

Quantitative Radioimmunoassay

Reference Range *

Acetylcholine Binding Ab: Negative 0.0-0.4 nmol/L ; Positive 0.5 nmol/L or greater
Acetylcholine Blocking Ab: Negative 0-26% blocking ; Indeterminate 27-41% ; Positive 42% or greater
Acetylcholine Receptor Modulating Ab Negative 4-45% Modulating; Positive 46 % or greater
MuSK <1:10

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Details
Days Set Up
Sunday - Saturday
Analytic Time

7 - 14 days

Soft Order Code
Reference Laboratory
Mayo FGMRP (ARUP 3001869)
Special Testing
Specimen Requirements
Collection Instructions

Collect specimen in SST or red top tube. Spin and aliquot into a screw capped plastic tube. Send to Specimen Processing refrigerated

Normal Volume
1 mL serum
Minimum Volume
0.5 mL serum
Storage Temperature
Refrigerated preferred, frozen acceptable
Additional Information

Test sent to Mayo Clinic Laboratories; performed by ARUP Laboratories

CPT Code
83519 Reflexes if appropriate: 83156, 83516, 86255, 86256