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Tartrate Resistant Acid Phosphatase Stain
0049060
Ordering Recommendation

Aid in identification of hairy cell leukemia.

Mnemonic
TRAP
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
  • Anatomic Pathology Test Request Form Recommended (ARUP form #32960)
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 transport 6 unfixed, air-dried, and unstained bone marrow aspirate smears. Protect from light. 
Storage/Transport Temperature
Room temperature. 
Unacceptable Conditions
Frozen specimens. Peripheral blood smears older than one year. Anticoagulated blood or bone marrow sent without well-prepared unfixed smears if greater than 48 hours. 
Remarks
Blood specimens must be received within 24 hours of collection; testing must be performed within 48 hours of collection. 
Stability
Ambient: 24 hours; Refrigerated: Unacceptable; Frozen: Unacceptable 
Reference Interval
Interpretive Data
Refer to report.

Note
Further information on how to make an adequate slide, in the form of an instructional video, can be found at: https://www.youtube.com/watch?v=ca3NwrlpS40&feature=youtube
Components
Component Test Code*Component Chart NameLOINC
0049060Trap Stain11020-5
* 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
  • Hairy Cell Leukemia (HCL) Stain
  • TRAP
  • Trap Stain