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Test Directory » PT, Prothrombin Time with INR

Test Directory PT, Prothrombin Time with INR

PT, Prothrombin Time with INR

Order Code: PTINR

Test Summary

Screening test useful in those patients with high risk to predict post op hemorrhage. The Prothrombin time (PT) in conjunction with the INR is used to monitor oral anticoagulants such as coumadin. Additional uses for PT testing in patients where acquired multiple deficiencies may be suspected. Such disorders may include DIC, liver disease, renal disease and severe malabsorption.

Aliases

INR Protime Protime w/INR Pro-time with INR PT PT c INR PT w/ INR PT-INR

Specimen Collection

Special Instructions

N/A

Preferred Specimen

1 plastic (2.7mL) completely filled 3.2% Sodium Citrate whole blood (light blue top) tube

Minimum Volume

N/A

Instructions

Use standard venipuncture and disposal techniques.

Collect the required quantity of Sodium Citrate (light blue top) tubes.

Sodium Citrate (light blue top) tube: Completely filled tube with intact stopper must remain at room temperature and are stable only 24 hours.

*If testing cannot be performed within 24 hours then Sodium Citrate light blue top must be centrifuged. Sodium Citrate plasma must be removed then aliquoted into a plastic pour off tube and placed in a <−20 degrees C freezer.

Patient Preparation

N/A

Storage

Whole blood Sodium Citrate (light blue top) tube(s)

Transport Temperature

Room Temperature: Whole blood Sodium Citrate (light blue top) tube(s)
Refrigerated: Unacceptable for Sodium Citrate (light blue top) tubes whole blood or capped plasma aliquots
Frozen: Capped aliquots of Sodium Citrate plasma

Specimen Stability

Room Temperature: Whole blood Sodium Citrate (light blue top) tube(s) <
24 hours
Refrigerated: Unacceptable for Sodium Citrate (light blue top) tubes whole blood or capped plasma aliquots
Frozen: Capped aliquots of Sodium Citrate plasma (Polypropylene tubes recommended) <
14 days at <
&minus
20 degrees C
<
6 months at <
&minus
70 degrees C

Limitations

N/A

Other Acceptable Specimens

N/A

Unacceptable Specimens

Rejected for hemolysis, clotted, improper fill, incorrect specimen type, thawed frozen aliquots, refrigerated plasma or blood, expired test tubes, >24 hours old if not processed into separated frozen plasma vials.

Order Code

PTINR

EPIC (Premier) Code

LAB348

Includes

N/A

CPT Code

85610

Billing Code

300482

CPT Statement

Methodology

Mechanical Clot Detection

FDA Status

FDA approved

Physician Attestation of Informed Consent

N/A

Testing Laboratory

CompuNet Clinical Laboratories, LLC
2308 Sandridge Drive
Moraine OH, 45439

Department

Hematology

Reference Range

11.7-13.9 Seconds

Setup Schedule / Expected Turnaround Time

Daily; Report available: 1 day