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Laboratory Medicine

Test catalogue

Leukocyte Alkaline Phosphatase (LAP)

Test Name

Leukocyte Alkaline Phosphatase (LAP)

Na-Hep Tube Specimen Type / Requirements

Container Type = 1 Green Top (Na Hep)

Volume: 10 mL

Tube must fill to at least ½ or greater of its vacuum capacity

Specimen Handling

Collection Instructions: Collect in glass green top (Sodium Heparin) top. Write your initials, date and time of collection on the collection label or requisition.

Laboratory Staff Instructions: The specimen should only be collected between Monday to Thursday for the referred out laboratory to receive the specimen within 24-48 hours after collection. Do not centrifuge, Ship whole blood at room temperature.

Rejection Criteria: Serum, plasma, unlabeled or samples of non sufficient quantity.

Stability: Stable at room temperature for 24 - 48hours, refrigerated for 5 days.

Transportation: Send sample to core lab as soon as possible.

Required Documentation

Turnaround Time (TAT)

3 Days

Test Utilization

Reference Value

See Interpretative Report

Test Code



Testing Location

Referred Out – ON, Canada (ROGDL10)

Other Information

Last Updated: Sept 25, 2019