Fastening or not to perform my test?

[archkre]

Hi there:

I am the happy owner of a coagucheck machine, and I forgot if it is necessary fasting to take the test.

I usually take the test first thing in morning before breakfast. Can the results of inr change if I fast or not?

Thank you!!!
Daniel::confused2:

 

[dick0236]

No, you do not have to fast before INR testing. Try to do your tests the same time of day whenever you test.

 

[ALCapshaw2]

Fasting (NOT fastening as in 'fastening your shirt') is NOT required for testing INR.

 

[archkre]

Oops, sorry for the typo!
I usually take the test first thing in morning before breakfast and most important before my morning medication (not warfarin).

 

[lance]

I test in the morning, too. It's just how I worked testing into my schedule and I try to take warfarin just after supper.

 

[Protimenow]

Blood sugar and INR are unrelated. One should have nothing to do with the other. Warfarin takes days for the effects to show.

Even if you ate a lot of greens for breakfast, the reduction in your INR wouldn't show for a few hours (the effect of the vitamin K in the vegetables may be more rapid than the effects of warfarin).

Most people probably check their INRs the same approximate time of the day that they test -- but tests are usually done weekly, or even less often than that.

(For a while I was taking two different doses - 7 mg on every day but Sunday and Thursday, when I took 8 mg. I may have had a slightly higher INR 3 or 4 days after my 8 mg dose than on tests 3 or 4 days after my 7 mg dose, but that's the only time I expected much difference. AND this had NOTHING to do when whether I tested before or after a meal, etc.)

 

[Bina]

Hi there:

I am the happy owner of a coagucheck machine, and I forgot if it is necessary fasting to take the test.

I usually take the test first thing in morning before breakfast. Can the results of inr change if I fast or not?

Thank you!!!
Daniel::confused2:

Daniel, congrats on getting your home monitor

Time of day and/or food intake has no effect on your test, so just do what is most convenient for you.
I like to do mine every couple of weeks during a quiet afternoon and I mark down the INR result on my
agenda and also on a sheet of paper that I keep with the monitor.
Enjoy !!