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Proteinase 3 Antibodies
Alternative Names/Synonyms
ANCA, Anti-Neutrophil Cytoplasmic Antibodies, Anti-PR3 Antibody, PR3
Laboratory
Core Laboratory & Transfusion Medicine
Sub-section
Biochemistry
Specimen Type
Blood
Test Code
PR3A2
Clinical Significance (If applicable)
Assisting in the diagnosis of Wegener granulomatosis. This has replaced previous ANCA testing by immunofluorescence.
Specimen Requirements (Sample Type)
Serum
Specimen Requirements (Volume (mL))
0.5 mL
Specimen Requirements (Tube Type)
Serum (Gold SST)
Collection Containers – Tube Types
Draw (mL)
4.5 mL
Collection Requirements
Collection Instructions
Sample Stability
Room Temperature
: 48 hours
Fridge
: 2 weeks @ 2-8°C
Freezer
: 1 year @ -20°C
Cause for Rejection
Specimen Acceptability and Transport Guidance
Instrument, Methodology
BIO-FLASH, immunoassay
Test Availability
Weekdays
Routine Turnaround Time
1 week
Reference Ranges
< 20 CU
In case of discrepancies, always interpret results using reference ranges as stated on laboratory reports and/or electronic patient chart.
Laboratory Contact Information
416-586-4800 extension 4688
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