PROTHROMBIN TIME (INCLUDES INR)

General Information

HLAB/HOL Code: PT
UPHSM LIS Test #: 318
Schedule: Daily
Testing Time: 1 day
Testing Lab: UP Health System-Marquette

Specimen Info
Only 1 specimen type required, unless otherwise specified

Volume: 1.0 ml of citrate plasma
Temperature: ambient
Tube Type: 1 light blue top (citrate) tube
Collection Info:
Do not over or under fill tube. Do not centrifuge. Send unopened tube. If testing is unable to be completed within 24 hours of draw please separate plasma and send specimen frozen.

Methods

Photo optical clot detection

Clinical Utilities

Monitoring oral anticoagulant therapy (includes INR)

CPT Codes

85610

* The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding
is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

Reference Range

Instrument Specific