Prothrombin Time (PT) Mixing Studies PTM

Method(s) Clot Detection
Specimen Required
Collect

One adequately filled 3.0 mL light blue (sodium citrate) top tube.

Transport 3 mL whole blood at 20-25°C.
Remarks

Draw blood into the citrate tube (light blue cap) filled to the proper level (1 part anticoagulant to 9 parts blood). Invert tube 3-4 times to avoid clotting.

Stability Ambient and Refrigerated Plasma: 4 hours; Frozen Plasma: 2 weeks
Unacceptable Conditions

Specimens that are clotted, hemolyzed, collected in the wrong tube, less than 90% filled, or non-frozen plasma are unacceptable for testing.

Schedule Daily-24 hours per day
Billing Code 4010119
CPTCode 85611 X2
Preferred Specimen Collection Device(s)
Reference Interval

9.2 - 11.9 seconds

No Appointment Necessary
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12 Patient Service Centers in Central New York.

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