Test Code LAB90260 Proteinase 3 Antibodies, IgG, Serum
Reporting Title
Proteinase 3 Ab (PR3),S
Methodology
Bio-Flash Chemiluminscent Immunoassay
Useful for: Evaluating patients suspected of having Wegener Granulomatosis (WG) and distinguishing between WG and other forms of vasculitis, in conjunction with:
-MPO/ Myeloperoxidase Antibodies, IgG, Serum
-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.
Performing Laboratory
OhioHealth Laboratory Services- RMH Special Testing
Specimen Requirements
Preferred: Serum
Acceptable: Speckle top and plain red top tubes
Draw blood in gold top tube(s). Spin down and send 1 ml of serum refrigerated.
Specimen Stability
Specimen Type |
Temperature |
Time |
Serum |
Refrigerated (preferred) |
7 days |
|
Frozen |
21 days |
Reference Values
Negative: < 20 CU
Positive: ≥ 20 CU
Day(s) Performed
Monday through Friday day shift only
Specimen Transport Requirements
Refrigerate: OK
Frozen: OK
Test Classification and CPT Coding
83516