The patient regularly argues about the results and the indicated Coumadin dose. She argues both with the doctor and with me, her caregiver, who has been doing this testing with her for more years than the doctor. Also, the Dr frequently does not get back to us with the new dose. Home testing is weekly, but the patient wants the test more often because she's sure the medication dose is wrong. So maybe my question is really about what to do when the patient stops trusting the doctor and the caregiver.