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
MMLR
Laboratory
Sendout
Reference Laboratory
Mayo FGMRP (ARUP 3001869)
Section
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

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