Did you review the limitations on the insert that comes with the strips to see if any might apply to you?but it looks like there isn't too much else that I can do.
This is a reasonably well documented issue. From this 2007 article:What I have found while comparing INR lab tests and my coaguchek is when ever lab results are between 2.3 and 2.6 coaguchek will show around 2.8 . As and when the INR increases the gap between lab results and coaguchek also widens . Say for eg when the lab results show 2.8 or 3.0 coaguchek will show 3.7 or 3.9 . So I guess the accuracy is not linear across all INR ranges .
yes, but its already established that the error brjshb asked about is less at lower levels ... I have no desire (or fantasy it brings any benefit) to be 1.8 even if I had an On-X.What if your INR was 1.9 or 1.8 (with range 2.0-3.0)? Would you adjust then?
indeed more complete answer ... yes I'd do that too ... Missing from this question is any context, such as what was the previous reading.but I would watch my INR over the next few tests.
Hi Dick,my range is 2.5-3.5 a 1.8 makes me nervous. I'd bump my dose up 10%-15% if I got <2. I am concerned about low INRs and strokes.
No. A single test that was only .1 or .2 out of range would not trigger a dosing change unless it shows a trend of low INR over time. Those blips are usually just outliers and self-correct by the next test.Hi Dick,
Regardless of what you were the prior test/week, if you got a 2.3 or 2.4 just below your range of 2.5-3.5, would you bump up your dose or stay the course and wait until your next test to see what it is?
My range is 2-2.5. I run 2.4 +/- 0.2 about 85% of the time on my current dose for the last 18 months. If I come up with a 1.9, I don't adjust. I test in a week to 10 days to make sure it doesn't drop. I generally test every 2 weeks. If I come up 1.8, I drop 0.5mg off that day's 4 or 4.5 mg dose and test in a week to 10 days. On the high end, I adjust if >2.8, the same 0.5 mg or ~12%.No.
What if your INR was 1.9 or 1.8 (with range 2.0-3.0)? Would you adjust then?