We use the INRatio device.
Our supplier gave it to us for ordering the test strips from them
I don't know what they cost exactly. I would not be willing to spend much on one since its not a huge money maker.
Since pradaxa and xarelto hit the market, 75% of our coumadin patients are switched over and we are not using the test as often. But we test about 2-3 pts per day.
In-office INR is CLIA waived. I do it for convenience not as a big income producer.