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HelpTest Code PTT Partial Thromboplast Time (PTT)
Performing Laboratory
Central Vermont Medical Center
Specimen Required
Container/Tube:
Preferred: Plasma Na Cit (BLUE)
Acceptable:
Collection Instructions:
1. Tube must be full
Volume
1 ml
Specimen Stability
Ambient: 4 hrs
Refrig: 4 hrs for plasma only.
Frozen: 2 weeks
Day(s) Performed
Daily
Specimen Type
Whole Blood
Container
Plasma, Na Cit (BLUE)