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PR3AB / PR3-M
PROTEINASE 3 AB, IGG, SERUM

Test Code PR3AB / PR3-M 
Test PROTEINASE 3 AB, IGG, SERUM 
Methodology Multiplex Flow Immunoassay 
Description Useful for evaluating patients suspected of having Wegener granulomatosis (WG)

Distinguishing between WG and other forms of vasculitis, in conjunction with MPO / Myeloperoxidase Antibodies, IgG, Serum and ANCA / Cytoplasmic Neutrophil Antibodies, Serum (may be obtained as VASC / Antineutrophil Cytoplasmic Antibodies Vasculitis Panel, Serum)

May be useful to follow treatment response or to monitor disease activity in patients with myeloperoxidase antibodies 
Specimen Draw blood into a plain red-top tube(s) or serum gel tube(s). Spin down and send 0.5mL (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