Specimen Preparation: Separate serum from cells ASAP or within 2 hours of collection and freeze. Transfer 1 mL platelet-poor plasma to an ARUP Standard Transport Tube.
Storage/Transport Temperature: Frozen.
Unacceptable Conditions: Serum. Specimens refrigerated or at room temperature for greater than four hours. Clotted or hemolyzed specimens.
Stability (collection to initiation of testing): Ambient: 4 hours; Refrigerated: 4 hours; Frozen: 2 weeks
Reference Interval:
24-35 seconds
Note:
Reference interval established using 3.2% sodium citrate.
CPT Code(s):
85730
Cross References:
aPTT (Partial Thromboplastin Time), Partial Thromboplastin Time (PTT), Activated (Partial Thromboplastin Time), PTT (Partial Thromboplastin Time)
