Result Test Name
QUEST INR
Laboratory
QUEST LAB
Result Test Code
1230910306
Laboratory Test Name
QUEST PROTHROMBIN WITH INR AND PARTIAL THROMBOPLASTIN TIMES
Reportable Test Name
-
Result LOINC
6301-6
Collection Container
Lt Blue Top-Citrate
Units
-
Collection Requirements
Preferred Specimen(s) One full unopened 3.2% sodium citrate (light blue-top) tube Alternative Specimen(s) 1 mL frozen plasma Minimum Volume 0.5 mL frozen plasma Collection Instructions Unopened light blue-top tube: Correct ratio of blood to citrate is critical. Do not overfill or underfill collection tube. Mix by inversion 4 times. For non-heparinized patients maintain specimen at room temperature. Do not uncap. Stable 24 hours at room temperature. 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 (<10000/mcl). Freeze immediately and ship on dry ice. Whole blood: The tubes should be at 100% +/- 10% fill volume in order to obtain the correct ratio.
Container Temp
Room Temperature (1)
Container Volume
2.700
Test Info
-
Shipping Instructions
Transport Container 3.2% sodium citrate (light blue-top) tube Transport Temperature Room temperature Specimen Stability Unopened light blue-top tube Room temperature: 24 hours Refrigerated: Unacceptable Frozen: Unacceptable Separated platelet-poor plasma Room temperature: Unacceptable Refrigerated: Unacceptable Frozen: 14 days Reject Criteria Gross hemolysis Grossly lipemic Improper blood to citrate ratio Clotted High hematocrit Improper blood collection