Highest INR you have heard of or experienced?

[carolinemc]

Years ago, I was able to get in touch with the CEO of Coagusense, makers of the Coag-Sense meter. He told me that there are some places (hospitals? clinics?) that switch from the CoaguChek meter to the Coag-Sense to validate results if the CoaguChek results are 4.0 or above.

I don't know who, or where, these places that use the Coag-Sense to validate high numbers, but since they changed management a few years ago, my confidence in the company and their test results has dropped so much that I haven't bought any more strips, and haven't tested with a Coag-Sense meter for well over a year. (And without any recent strips, I don't think I WILL, either).

My lab that uses that, when I went to 100, I had to go to the regular lab in the hospital and get a draw from the arm. My reading in the lab was 4.0. The other lab concurred the same, and we dosed accordingly.

 

[Protimenow]

You had an INR of 100? 10,0? Was it the Coag-Sense that gave you that high INR? (IIRC, the Coag-Sense won't give a reading above 8.0, or maybe 9,0)

 

[thomas999]

You had an INR of 100? 10,0? Was it the Coag-Sense that gave you that high INR? (IIRC, the Coag-Sense won't give a reading above 8.0, or maybe 9,0)

It was actually over 100, probably 120. This was measured by the local hospital lab, and in the emergency room at the hospital. I remember talking to a nurse who said that's impossible because it can't go over 100. I don't know why she would think it stops at 100, but the PT value peaked at over 12. I was starting to bleed out from all soft tissue in the body. I often wonder if there was bleeding in the brain, but I am no crazier than I was before, at least that's what I think, haha.

 

[pellicle]

I often wonder if there was bleeding in the brain, but I am no crazier than I was before, at least that's what I think, haha.

HA

I knew I should have read this earlier ;-)

 

[Lisa from LJ]

PT value peaked at over 12

I think your numbers are backwards. PT number is significantly higher than INR number. A PT of 100 would be an INR of over 15. An INR of 100 would be a PT in the 400s.

 

[Protimenow]

Lisa -- this makes a lot more sense than an INR of 100. And, FWIW, calculating the INR from the PT depends on the reagent value. The PT is divided by the reagent value to determine the INR.

FWIW - years ago, I was told by a clinic (probably mishandled my sample) that my INR was 7.1. I was careful for a few days, just in case the value was right My continued regular dose brought my INR back within range. I suspect that the lab was wrong - or the sample was mishandled so badly that an erroneous result was obtained.

(If the hospital got an INR of 100, it would have/should have, re-run the test immediately.