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Test Code PT/INR Prothrombin Time with INR  (Test Code – PT):

Specimen Type:

Light Blue (Sodium Citrate – 3.2%) – Plasma Only

Specimen Volume and Collection Instructions:

When using a butterfly draw a red top tube or waste tube and discard, then proceed to draw a light blue top tube.

Collection Tube MUST be filled completely. Gently invert the tube 3 to 4 times immediately after collection to ensure proper mixing of blood and anticoagulant

Special Handling Instructions:

NOTE:  If specimen is drawn in conjunction with APTT please refer to the special handling instructions for that analyte.

Inpatients:  Deliver to Laboratory. 

Outpatients:   Un-centrifuged or centrifuged with plasma remaining on top of the cells are stable for 24 hours from time of collection at room temperature.

If unable to deliver to the laboratory within 24 hours of collection:

Centrifuge the light blue top tube

Transfer plasma to an appropriately labeled plastic vial

Centrifuge plasma in the plastic vial a second time to remove the platelets

Transfer sample to another appropriately labeled plastic vial

Label vial PLASMA

Freeze immediately

Stat Turn-around Time:

1 hour from specimen arrival in the laboratory

Routine Turn-around Time:

Inpatients: 4 hours

Outpatients: 24 hours from specimen arrival in the laboratory

Reference Range:

Some reference Ranges are age and/or gender dependent.  Please see report for complete details.

Performing Laboratory

CPH – Canton Potsdam Hospital

CSH – Clifton Springs Hospital

Elmgrove – Outpatient Laboratory

GH – Gouverneur  Hospital

MH – Massena  Hospital

NWCH – Newark Wayne Community Hospital

RGH – Rochester General Hospital

UMMC – United Medical Memorial Hospital

UH – Unity Hospital

CPT Code:

85610

LOINC Code:

PT:          5902-2

INR:        6301-6