Effective December 6, 2021, Spectrum Health Reference Laboratory (SHRL) Coagulation department will go live with a new lot of Prothrombin Time (Protime/PT) reagents. The reference range for the PT will be adjusted to reflect this reagent lot change and align with our Regional Laboratories. The new reference range will be 9.5 – 12.0 seconds. There will be no change to the INR ranges.
||Current Reference Range
||New Reference Range
|Prothrombin Time (PT)
||9.7 – 12.6 seconds
||9.5 – 12.0 seconds
The Spectrum Health Laboratory Coagulation Department announces the following changes occurring on 6.29.21 because of new instrumentation:
• New coagulation instrumentation will go-live on 6.29.21.
• This new instrumentation will align the Spectrum Health Regional Laboratory (in GR) with current Regional/Blodgett reportable upper limit for Protime/INR results.
• The current Protime (PT) upper limit of 120 seconds will change to 90 seconds. Any result that is greater than 90 seconds, will be reported as >90 seconds.
• The current INR upper limit of 12.0 will change to 8.0. Any result that is greater than 8.0 will be reported as >8.0.
Any questions can be directed to the Spectrum Health Regional Laboratory Coagulation Department using the Contact Us link above.
PT/INR (Protime with INR): Epic Code #LAB320 | Interface code #10059 | CPT #85610