Platelet Function Test
Centralized Core Laboratory:Hematology
Blue top (sodium citrate) tube
Cause for rejection:
Sample hemolyzed, clotted, diluted with IV fluid; contaminated with heparin; improperly filled; received on ice; received > 4 hrs after drawn
Daily, 24 hours
Test Cartridge System Simulating Platelet Adhesion and Aggregation
Specimens should be sent to the lab immediately. Specimens should not be sent on ice.
For Outpatients, test should only be drawn in outpatient locations within a Hospital (Akron or Beeghly). If collected at an offsite location, specimen is stable only 1 hour. Call a STAT Courier
Reference range: COL/EPI = 80-184 sec COL/ADP = 56-102 sec
NOTE: Platelet counts less than 50,000 will not give accurate results and may be rejected.