My FIL's inr is 1.3 was really low 2 weeks ago but the doctor said not to raise his warfarin dose at all. I know it should be 2-3 and with it that low should have a day or so of higher dose not sure if this is worth mentioning to the doctor or just trust he knows what he's doing?
Is your FIL at risk for falling? For my husband the wafarin question eventually became which is the greater risk ... a stroke, or a brain bleed from a fall? We stopped the wafarin in what turned out to be his last year.
Babalou the office called me directly didnt speak to dad at all about it so know this to be fact. but in the past they would always give him a bit more...there was talk with dad about backing off or even stopping his medication as part of his end of life care and maybe thats why but we didnt make that choice yet
At our clinic there is a nurse who does the INR testing and dosage adjustments. After the initial script the doctor doesn't get involved unless the nurse decides to consult him. This works ideally, in my opinion. The nurse has in-depth knowledge of adjustments and diet and dosage and isn't responsible for hundreds of other things for each patient.
I think it would be OK to say something like, "Oh, with that reading I sort of expected to need a higher dose for a few days. Isn't that how it works?" assuming you attend your FIL's appointments. This would give you another chance to judge his competency.