LOL on the "Strange. The INRatio2 takes a very small sample. Maybe we need to stick you toe? hehe ". My Husband said he was thoroughly trained on it, yadda yadda, however I did notice that some of the way he wanted to do the sequence of steps the first time we used it for me, it was different than the instructions. (We women like to read instructions, LOL.) The other 2 times, what would happen is my finger would produce a little sample, and perhaps he tried to put it on the testing strip too soon, and it would start running down the channels in the test strip, but not sufficient to be read. I forget the name of what they use at the so-called 'Coumadin clinic' but I know the Case Manager guy that runs that has to squeeze my finger about 3 times, scraping off the drops into a little catching gizmo. (sorry for not having right terminology)