PT Mixing Study
Order Code: MPT
Order Form: Laboratory Requisition
Specimen:
Plasma
Collection Medium:
Light Blue top tube 2.7 mL (Na Citrate)
Minimum:
Full draw; 2.7 mL light blue top (mix well).
Testing Schedule:
24 hrs/day, 7 days a week, including holidays.
Turn Around Time:
24 hours (upon receipt in laboratory)
Reference Range:
9-12 seconds
Methodology:
Optical clot detection.
Sample Processing:
Centrifuge within two hours of draw time.
Aliquot serum/plasma into plastic container and cap (glass is not acceptable).
Centrifuge a second time at 3500 RPM for 10 minutes and aliquot into a new, labeled plastic tube.
Sample Storage:
Freeze specimen immediately.
Transport Instructions:
Place specimen into zip-lock type bag, seal bag.
Place requisition into outside pocket of bag.
Place dry ice on top of specimen in styrofoam container.
CPT Code:
85611
 
See Additional Information:
Phlebotomy Tubes and Order of Draw