My lab does the coag and rarely sends be to the basic lab. Has nothing to do with the post on a small-scale study. More studies have to be done to get doctors wo make that risk call.I home test. But the testing done before I home tested and the occasional test to check the accuracy of my Coaguchek was done via venous draw at the lab. It may be the if you go directly to the coumadin clinic for the test that the finger prick may be more common.
It will be interesting to see what the experience is of others on this.