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Protime-INR
MessageTube must be allowed to fill completely.
Test Code
450100
Preferred Specimen
5.0 mL Plasma
Instructions
SPECIAL HANDLING: The specimen should be transported at room temperature. Specimens for PT assays can be maintained uncentrifuged or centrifuged with the plasma remaining on top of cellular component in an unopened tube at room temperature for up to 24 hours from the time of collection.
To separate plasma, use a plastic transfer pipette; remove the plasma to a plastic tube without disturbing the buffy coat. If testing is not complete within 24 hours, the plasma may be stored frozen at <-20oC or below for up to 2 weeks or -70oC or below for long term storage. Frozen plasma samples must be rapidly thawed at 37oC. Mixing is critical before testing.
To separate plasma, use a plastic transfer pipette; remove the plasma to a plastic tube without disturbing the buffy coat. If testing is not complete within 24 hours, the plasma may be stored frozen at <-20oC or below for up to 2 weeks or -70oC or below for long term storage. Frozen plasma samples must be rapidly thawed at 37oC. Mixing is critical before testing.
Transport Container
3.2% sodium citrate (light blue-top)
Transport Temperature
Room Temperature
