Platelet Count
Label Mnemonic: PLT
Epic Lab Code: LAB301
Order Form: Laboratory Requisition
Whole Blood More information
Collection Medium:
Lavender top tube 3 mL (EDTA) Light Blue top tube 2.7 mL (Na Citrate)
Full draw; 3.0 mL lavender top; (or fingerstick)
Testing Schedule:
24 hrs/day, 7 days a week, including holidays.
Turn Around Time:
Routine turnaround time is approximately 1 hour.
Reference Range:
150-400 k/mm3 Critical value: <10 k/mm3 and >1000 k/mm3
Please print, complete and submit the Advance Beneficiary Notice (ABN) along with the Laboratory Requisition before shipping the specimen.

For patients who repeatedly have platelet clumps which preclude determination of an accurate platelet count, it is now possible to order a platelet count from a citrate tube. In many cases the EDTA in a lavender top tube causes the platelet clumping which does not occur in a blue top (citrate tube). Use order code PLTB to order the Platelet Count, Blue Top (Citrate) Tube. The Epic order code is LAB7882. This test is available 24 hours a day, 7 days a week. This test cannot be done on a citrate tube drawn for coagulation testing.
Flow Cytometry
Sample Processing:
Submit whole blood in original container.
Do Not Centrifuge.
Sample Storage:
Transport Instructions:
Place specimen into zip-lock type bag, seal bag.
Place requisition into outside pocket of bag.
Transport in cooler with refrigerated coolant packs.
CPT Code:
See Additional Information:
Hematology Critical Lab Values