Platelet Count

CPT Code


Specimen Type


Container Type



Room Temperature, 24 hours; 2-8°C, 48 hours

Handling Instructions

Invert 8-10 times immediately after collecting

Clinical Notes

Platelet count (Plt) helps assess bleeding, thrombotic, and neoplastic processes. It assists in the evaluation of bone marrow function, as well as the study of some diseases involving autoimmune mechanisms. Platelets are measured in parts per cubic mm (mm3) and often expressed as 1000/μL or x 109/L.

Performing Lab

Principle Laboratory - Dallas
6210 N Belt Line Rd
Irving, TX 75063

Principle Laboratory - Houston
16840 Buccaneer Ln
Suite 281
Houston, TX 77058