LABORATORY TEST

Laboratory Test: Partial Thromboplastin Time (PTT)

Test Code: 037

Methodology: Automated Clotting Time
Performed: Mon-Sat
Reported: 1-2 days
Specimen Required: Collect: Blue-top (sodium citrate) tube - Whole blood .  Specimen Preparation: Blood should be collected in a blue-top tube containing 3.2% buffered sodium citrate. The sample should be mixed immediately by gentle inversion at least six times to ensure adequate mixing of the anticoagulant with the blood.  Storage/Transport Temperature: Specimens are stable at room temperature for 24 hours.   Stability: Ambient: 24 hours; Frozen plasma : 2 weeks Causes for Rejection : Gross hemolysis; clotted specimen; frozen plasma  thawed in transit; specimen collected in tube other than 3.2% citrate
CPT Codes: 85730
Cross Reference: PTT (Partial Thromboplastin Time), Partial Thromboplastin Time (PTT), Activated (Partial Thromboplastin Time), PTT (Partial Thromboplastin Time)
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