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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