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MPO / MPO-M
MYELOPEROXIDASE AB, IGG, SERUM

Test Code MPO / MPO-M 
Test MYELOPEROXIDASE AB, IGG, SERUM 
Methodology Multiplex Flow Immunoassay 
Description Useful for evaluating patients suspected of having immune-mediated vasculitis, especially microscopic polyangiitis (MPA), when used in conjunction with other autoantibody tests (see Cautions)

May be useful to follow treatment response or to monitor disease activity in patients with MPA 
Specimen Draw blood in either a plain, red-top tube(s) or serum gel tube(s). Spin down and send 0.5 mL (minimum: 0.35 mL) of serum refrigerated. 
Reference Values <0.4 U (negative)
0.4-0.9 U (equivocal)
> or =1.0 U (positive)
Reference values apply to all ages. 
Analytic Time 1 Day 
Day(s) Test Set Up Monday through Friday 
CPT Code(s) 83516