037

Test CODE NAME

037

Partial Thromboplastin Time (PTT)

Methodology: Automated Clotting Time
Performed: Sun-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
Note: This test is approved for NY . 
Performing Lab
Accu Reference Medical Laboratory
CPT Code(s): 85730