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Cardiovascular

General Information, Hemostasis/Coagulation

Test Update: Prothrombin Time (Protime/PT)

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.

Test Current Reference Range New Reference Range
Prothrombin Time (PT) 9.7 – 12.6 seconds 9.5 – 12.0 seconds

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Hemostasis/Coagulation

Update: PT/INR Resulting Change

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.

TEST INFORMATION 

PT/INR (Protime with INR): Epic Code #LAB320 | Interface code #10059 | CPT #85610