For those on Warfarin who find monitoring INR levels a pain, I used to. It involved a drive to a local lab, being poked in my only good vein and a drive home. I didn't know for a few years that there is a home monitor that only requires a finger stick (a little more blood than a blood sugar poke). I've been doing that for a few years now. It's been really helpful when I am put on an antibiotic or other drug that may interfere with the INR. I can do extra tests as directed by my cardiologist without the hassle. I've found it to be pretty accurate and certainly easy to use. Results are entered online or by phone.