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Leukocyte Alkaline Phosphatase Stain

Source Blood 
Mnemonic LAP 
Specimen Requirements 1 x 5 mL dark green top SODIUM heparin tube
Whole blood 
Specimen Handling

RRL: Mix specimen well, prepare 6 thin smears from green top tube. Mark slides “LAP”.
When slides are dry, place in closed folder to protect from light. Forward both blood and slides.

PSC: Send blood specimen STAT directly to FMC Special Hematology, call 944 -1975.

 
Additional Information Due to specimen handling requirements, test should not be collected by Mobile Collection Services. 
Testing Location Special Hematology 
Testing Frequency Weekdays 
Alternate Name(s) LAP Stain 
Reference Interval  


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