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Laboratory: Clinical Immunology
Test Name:
ACETYLCHOLINE RECEPTOR - (S)
Test Code: ACHR
Clinical Information:
Testing is performed at St. Boniface Hospital Immunology Lab using an enzyme-linked immunosorbent assay (ELISA).
 
The ELISA test kit provides a quantitative in vitro assay for human antibodies of the immunoglobulin class IgG against acetylcholine receptors in serum for the diagnosis of Myasthenia gravis.
Collection Devices:
Specimen Required:
Blood: 5.0 mL


Serum: 1.0 mL
Referral:
Serum: 1.0 mL

Separate serum and ship refrigerated, or frozen if greater than 7 days from time of collection.
Requisition:
Reference Values:
<0.40 nmol/L:                  negative
≥0.40 to <0.50 nmol/L:   borderline
≥0.50 nmol/L:                  positive
A negative result does not necessarily exclude autoimmune disease.  Positive results should not be interpreted in isolation and must be correlated with relevant clinical findings.
Availability:
Laboratory Hours of Operation: Mon-Fri, 0800-1615, excluding holidays. ACHR TAT: Within 10 Days
See Also:
More Information:
ACHR reportable range: 0.00 – 8.00 nmol/L