poor instructions but good tool if you have the right tools to take the blood sample -and to use them..
you need a good lancing device (buy it because it is not in the original package), a set of capillary tube and NEVER touch the stripes (nobody is telling clearly). instructions are very poor and also the video on YouTube. Don't give it up if at the beginning it looks it is not working. as soon you understand how to do it it will work perfectly.
The unit has given a very high confidence level of my health platform, as I must use coumadin blood thinner. I am grateful for the presence of this tool as a guide to support my medical plan of health. Easy to set up, do as instructed - read provided manuals and see DVD before attempting to use the unit.