PT/INR instant results? Accurate? - page 2

I have a PT/INR meter which I would liken to a glucometer. A drop of blood and it calibrates the PT/INR. I wonder does anyone know how accurate it is? The first patient I tested with it had a PT of... Read More

  1. by   Eddie_T
    With our continuing interest in home testing my wife's cardiologist and INR nurses are going to move her to the CoaguChek XS sysrem to see if it works best for her.

  2. by   RubyRN,CHPN
    That's a very nice, easy to use system as well. Drop of blood goes to the side of the strip vs. the top of the strip. Has a few extra steps to it's use but steps to obtain the sample are pretty much the same. Manufacturer recommends washing your hands with warm soapy water prior to obtaining sample vs. using alcohol prep. Best of luck.
  3. by   Katme65
    Our agency has tested our machines for accuracy multiple times. Seems when we get bad readings, it's generally user error. Blood drops for our machines are to be obtained via a hanging drop, and no milking is allowed. A gentle steady pressure on dangling finger is okay supposedly. I've gotten the best results by warming the fingers with a moist compress, swab w/alcohol, wipe w/2x2, then obtain hanging drop via pipette which is then applied to the strip.
  4. by   indbletrble
    Our agency uses the Protime 3. It is approved by the FDA and has literature to support its accuracy. I am one who does not always take things at face value and have compared venipuncture results with the Protime results and found them to be right on target.

    This machine uses a slide called a curvette.....and the blood is gathered from a fingerstick with a tenderlet. The curvettes can remain stored in a cool, dry place for up to 6 months. They do not need to be refrigerated......although I do advise the staff to not leave the machine in their cars overnight with the winter temperatures.

    This machine cannot be used for patients on Lovenox. It is primarily used for those patients who have poor venous access.....although many of the MDs are requesting the machine be used so they can get immediate results.

    The agency absorbs the cost for the procedure....which is about $6.00 a draw......but have found it to be worthwhile. We get accurate results, our homebound patients are not incurring costs for a lab to draw the specimen and those that are difficult sticks are not traumatized.