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Test Code LAB1187 INR and Prothrombin Time

Aliases

PT INR

Special Collection Notes

Fill vials completely to the etched fill indicator on the tube. Do not underfill or overfill tubes.
After collection, invert tubes 3-4 times. Do not shake.

Specimen Type

Blood:
LT Blue Top Tube-Citrate

Processing Instructions

After collection, invert tubes 3-a4 times. Do not shake. Centrifuge within 30 minute sof collection.

1. Centrifuge sample per procedure.
2. Pipette off plasma into pour off tube.
3. Centrifuge spun plasma per procedure.
4. Pipette off plasma into pour off tube, being sure to leave red cell button undisturbed.
5. Attach original sample tube to pour off tube with rubber band.
6. Place sample in freezer until courier arrives.
7. Send sample frozen on dry ice via courier.

Specimen Volume

Preferred: 2.7 or 1.8 mL
Minimum: 1.8 mL

Temperature

Frozen

Test/Batch Schedule

Batched schedule

TAT

Routine: 4 hours
STAT: 45 minutes

Test Components

PT
INR

Reference Range

PT

12.0-15.0 Seconds

 

INR

0.90-1.20

CPT

85610

Performing Section

Hematology/Coag