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Myeloperoxidase Stain
0049030
Ordering Recommendation

Determine myeloid lineage in AML per WHO classification. Less sensitive and specific than flow cytometry immunophenotype.

Mnemonic
MY PEROX
Methodology
Cytochemical Stain
Performed
Mon-Fri
Reported
1-5 days
New York DOH Approval Status
This test is New York DOH approved.
Submit With Order
Time SensitiveTime Sensitive
ARUP Consult®
Disease Topics
Specimen Required
Patient Preparation
 
Collect
Lavender (EDTA) or green (sodium or lithium heparin) or heparinized aspirate of bone marrow. 
Specimen Preparation
Transport 6 unfixed, air-dried, and unstained push smears AND 5 mL whole blood (smears should be made from the blood submitted). OR 6 unfixed, air-dried, and unstained bone marrow aspirate smears. 
Storage/Transport Temperature
Room temperature. Testing must be performed within 48 hours of collection. 
Unacceptable Conditions
Frozen specimens. Peripheral blood smears older than one week. Anticoagulated blood or bone marrow sent without well-prepared unfixed smears if greater than 48 hours old. 
Remarks
 
Stability
Ambient: 24 hours; Refrigerated: Unacceptable; Frozen: Unacceptable 
Reference Interval
Interpretive Data
Refer to report.

Note
Hotline History
N/A
Components
Component Test Code*Component Chart NameLOINC
0049030Myeloperoxidase Stain32817-9
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
  • MPO
  • MPO Stain
  • Peroxidase Stain