Spin
Gold serum separator (SST) tube
Spin within 45 minutes of specimencollection and transfer separated serum to a Transfer vial/tube with cap - 12mL (LabCorp)
Ambient (preferred) - 7 days
Refrigerated - 14 days
Frozen - 2 months
AChR-binding assay: Radioimmunoassay (RIA)
AChR-modulating antibody: Cell culture based radioimmunoassay (RIA)
AChR-binding antibody
Negative: 0.00 - 0.24 nmol/L
An AChR-binding antibody result <0.25 will reflex to the AChR-modulating antibody at an additional charge.
AChR Modulating Ab (if appropriate)
Negative: < 21%