A
ALCapshaw
OK, I'll admit up front, I'm being lazy in asking this question before researching it, in the hope that someone already knows the answer(s).
Here's the question:
Since INR is a RATIO, my understanding is that is supposed to eliminate the variation in reagent sensitivity from the result, SO,
why do we still see a consistent difference between the ProTime instruments and the Coaguchek instruments?
I'm also wondering if a better way to characterize the differences might be RATIO or Percent as opposed to a simple subtraction difference.
The smallest difference I've seen between my ProTime instrument and my Coumadin Clinic's Coaguchek machine is 0.5 and the largest difference has been 2.0 ! I've had two high readings (4.2 and 4.5) from the Coaguchek machine that seem questionable to me.
The BIG question in my mind, is why do we still see any difference at all between the two instruments.
'AL'
Here's the question:
Since INR is a RATIO, my understanding is that is supposed to eliminate the variation in reagent sensitivity from the result, SO,
why do we still see a consistent difference between the ProTime instruments and the Coaguchek instruments?
I'm also wondering if a better way to characterize the differences might be RATIO or Percent as opposed to a simple subtraction difference.
The smallest difference I've seen between my ProTime instrument and my Coumadin Clinic's Coaguchek machine is 0.5 and the largest difference has been 2.0 ! I've had two high readings (4.2 and 4.5) from the Coaguchek machine that seem questionable to me.
The BIG question in my mind, is why do we still see any difference at all between the two instruments.
'AL'