Skip to Content
UW Health SMPH
American Family Children's Hospital

UW Hospital and Clinics Lab Test Directory

Test Name: Myeloperoxidase Ab

Test Code(s): MPO / XMYPX

CPT Code(s): 83876

Methodology: Quantitative Enzyme Immunoassay

Clinical Significance: Follow levels of this specific antibody in patients with vasculitis who have been shown to have anti-MPO antibodies (typically associated with the P-ANCA pattern).

Days Performed: Mon-Fri, dayshift - day varies.

Turnaround Time: Stat: Not available stat.
Routine: 5 working days.


Specimen Requirements

Specimen: Blood

Collection Container: Preferred: Red top
Also Acceptable: Red cap with yellow ring (SST)

Collection Volume: Preferred: 3 mL
Pediatrics: 1 mL

Sample Analyzed: Serum

Volume Required: Preferred: 1 mL
Pediatrics: 0.3 mL

Specimen Processing: Centrifuge. Transfer cell free serum to plastic vial.  Refrigerate.

Specimen Transport: Transport specimen to UWHC Core Laboratory (B4/220). Transport with coolant pack if coming from UWHC Satellite lab location.

Outreach Specimen Transport: Transport specimen to UWHC Core Laboratory (B4/220). Transport with coolant pack if coming from outreach location.

Unacceptable Criteria: Microbially contaminated, grossly hemolyzed, lipemic and turbid specimens are not acceptable.

Stability: Ambient: 8 hours
Refrigerated: 7 days
Frozen: No limit at -20 C. Note: Avoid repeat freeze and thaw.


Interpretation

Reference Interval:

0 days and up: 0-20 Units

 

Myeloperoxidase Ab Interpretive Guidelines:

0-20 Units   

Negative

21-30 Units   

Weak Positive

> 30 Units   

Moderate to Strong Positive

   

 

    

ANCA reflex
Anti-Myeloperoxidase
Myeloperoxidase Antibody
Myeloperoxidase Ab
MPO

Back to Lab Test Directory Index