<
 / Physicians

Laboratory notice: New international normalized ratio reference interval

Date

Background: The provider for the Prothrombin Time (PT) reagent has announced that they will discontinue the production of the current PT reagent; they have presented an alternative reagent. With this new PT reagent implementation, NH has validated the new PT/INR Reference Intervals.

New Information: The following Reference Intervals have been updated:

  • International Normalized Ratio from 0.9 - 1.2 to 0.9 - 1.1
  • Prothrombin Time from 11.9 - 13.8 seconds to 11.8 - 14.8 seconds

For more information, see the full memo.

SHARE THIS PAGE