Myasthenia Gravis Autoantibody Reflex Panel, Serum (Referred Out)- Saskatoon

Overview

Description

Ordering recommendation

• An orthogonal algorithmic approach is employed to test for myasthenia gravis. Please see the BC Neuroimmunology website.
• Test available to ophthalmologists, internal medicine doctors and neurologists

Test ordering requirements

Forms required

• Specimen must arrive at SPH laboratory with copy of requisition
• Fill in the ‘Other tests’ location on the Acute Care Phlebotomy Requisition Form #101062 or UBC Neuroimmunology Laboratory Requisition

Specimen Information

Specimen types accepted

• Serum

Specimen collection container

• Preferred collection container: Gold (gel) 5.0 mL

Required volume

• Optimal volume: 5.0 mL full collection tube
• Minimum volume: 1.0 mL serum

(Submitting the minimum volume makes it impossible to repeat the test or perform confirmatory/reflex testing. In some situations, a minimum volume may require a second collection.)

Rejection criteria

• Specimens received where the collection protocols were not followed
• Pathology and Laboratory Medicine Acceptance and Rejection Criteria

Performance

Days/times performed

Availability	Shipped weekly Mondays
Testing site	Referred out by St. Paul’s Hospital Laboratory to the UBC Neuroimmunology lab

 

Maximum laboratory time

Results reporting

• 2-4 weeks turnaround time by testing laboratory

Other information

Additional comments

• Diagnosis of myasthenia gravis
• MusK Ab will be performed when AchR Ab is negative

Last Updated: January 22, 2026