Test Code CLST Closure Time, Plasma
Methodology
PFA-100 Analyzer
Performing Laboratory
St. Clair Hospital Laboratory
Specimen Requirements
Specimen must arrive and be tested within 4 hours of draw.
It is recommend to aviod sending specimens via pneumatic tubes systems.
Draw a full, light blue-top (3.2% sodium citrate) tube(s). Do not centrifuge. Forward promptly at ambient temperature only. If necessary call for a STAT pickup to assure timely testing.
Reference Values
Collagen-Epinephrine Cartridge: 84-175 seconds
Collagen-ADP Cartridge: 65-117 seconds
Day(s) Test Set Up
Monday through Sunday