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Test Code Billings Clinic: 3224 Myeloperoxidase (MPO) Antibody, IgG, Serum

Performing Laboratory

Billings Clinic Laboratory:  Immunology

Useful For

  • Evaluating patients suspected of having immune-mediated vasculitis, especially microscopic polyangiitis (MPA), when used in conjunction with other autoantibody tests
  • May be useful to follow treatment response or to monitor disease activity in patients with MPA

Methodology

Chemiluminescent Immunoassay

Specimen Requirements

  • Draw blood in a plain, red-top or red SST tube(s).
  • Spin down and send 1 mL of serum frozen in plastic vial.

Storage/Stability

Specimen Type Temperature Time
Serum Refrigerated 48 hours
  Frozen (preferred) 1 year
  Ambient (spun) 8 hours

 

Reject Due To

  • Specimen other than serum
  • Gross hemolysis
  • Gross icterus
  • Gross lipemia
  • Heat-treated specimen
  • Microbially contaminated specimen

Reference Values

< 20 CU (Chemiluminescent Units)

 

Interpretive Remark:  The following results were obtained with the INOVA QUANTA Flash MPO Chemiluminescent immunoassay.  Values obtained with different manufacturers' assay methods may not be used interchangeably.

Day(s) Test Set Up

Monday, Wednesday, Friday (Dayshift)

Test Classification and CPT Coding

86021 - Antibody identification; leukocyte antibodies

LOINC Code Information

Name LOINC Code
Myeloperoxidase, IgG AB 48404-8