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8847: Prothrombin Time with INR [8847] Print View
INR CALC     
Prothrombin Time CLOT DET    sec 

PRIMARY
1 Plasma Citrated 1 (0.5) mL   Frozen - 14 Day(s)  
ALTERNATE

Screening test for abnormalities of coagulation factors that are involved in the extrinsic pathway. Also used to monitor effects of Warfarin Therapy and to study patients with hereditary and acquired clotting disorders.

Platelet Poor Plasma: Centrifuge light blue-top tube 15 minutes at
approx. 1500 g within 60 minutes of collection. Using a plastic
pipette, remove plasma, taking care to avoid the WBC/platelet buffy
layer and place into a plastic vial. Centrifuge a second time and
transfer platelet-poor plasma into a new plastic vial. Plasma must be
free of platelets (<10,000/mcl). Freeze immediately and ship on dry
ice.
Setup Schedule
Tuesday-Saturday

Reported (Analytical Time)
Same day

CPT Code
85610

The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

Notes
Frozen -70 degrees: 6 months Methodology: Photo-Optical Clot Detection Reject Criteria: Hemolysis, Lipemia, Thawed plasma, Improper blood to citrate ratio, High hematocrit, Improper blood collection






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