CoaguChek INR - cut off range

What are you using for the cut off range for INR results on the CoaguChek before a venipuncture is required.

 

We state that - INR results >4.5 should have a venipuncture performed.

Is that what others are using or another range?

Replies to this Topic

We have found that INR results < 6.0 are acceptable.  A lab draw is required if ≥6.0

We use anything greater than 4.5.

 

 

Cindy Engbert MLS (ASCP)CM

Point of Care Coordinator

FHN

1045 W Stephenson St

Freeport, IL 61032

Phone: 815-599-6704

Fax: 815-599-6215

Email: lengbert@fhn.org

www.fhn.org

 

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Good morning!

Anything that is greater or equal to 3.0 needs a phlebotomy draw. In our studies, we compared Coaguchek Pro vs Stago and at 3.0 is where it did not correlate well.

Thanks

Julie Brim

The Vancouver Clinic-Vancouver WA.

We use 5.0.

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We first used 3.0 when we had a Stago system, now use 4.5 since we've moved to IL.

We use 4.0.  Anything equal to that or above requires a blood draw.

We use 5.0. Any greater or equal to 5 requires a blood draw. We also use the CoaguChek.

We've been using cut off >4.0 for years, based on comparisons with Stago; we think our data looks better compared to IL we now have on one campus but so far haven't changed the cut off to be higher.

After correlation studies on the newly calibrated strips and the most recent formulation of strips, we chose to confirm any Coauchek XS INR > 3.5 with a venous sample sent to a reference laboratory.

The FDA recommends confirming at or above 4.5.  We also have the Stago vs. CoaguChek INR issue where above 3.2 they diverge and do not compare.  Our cutoff has been 5.0 but I am working with our Medical Directors to bring it to the FDA cutoff recommendation of 4.5.  I'd like to have it lower, but with 10 anticoagulation Service clinics in 11 rural counties, there would be a great deal of push back and patient dissatisfaction. 

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