Methodology
Clotting Assay
Synonyms
Pradaxa
Specimen Type
Plasma
Performing Lab
Quest Diagnostics Chantilly
Epic ID
Other Reference Test
Lab Test Days
Tuesday, Thursday, Saturday
Standard TAT
1-4 Days
Collection Information
Specimen Required
(one) 1.8 mL or (one) 2.7 mL Blood
Container Type
Light Blue (Sodium Citrate)
Collection Instructions
Collect 90-120 minutes after the last dose (preferably after at least 3 doses).
Processing Information - Lab Use Only
Transport Temperature
On Ice
Specimen Stability
Room Temp: Unacceptable; Refrigerated: Unacceptable; Frozen: 30 Days
Rejection Criteria
Gross hemolysis; Visible fibrin clot; Received room temp; Received refrigerated
Test Volume Required
1 mL Platelet-Poor Plasma
Minimum Test Volume
0.5 mL Platelet-Poor Plasma
Processing Instructions
Platelet-Poor Plasma: Centrifuge (light blue-top) tube 15 minutes at approximately 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/uL). Freeze immediately and send frozen.
CPT Codes
80299