I perform semen analysis at my job. We use 40X for our motility estimates and sperm counts. We use 50X or 100X for our sperm morphologies. I read a little about the Micra kits. I read that they can give you estimates on count, motility and morphology....but it can't give you more detailed information that might be important. For example, he can have a good sperm count, normal morphology and good motility but low survival rate (testing for motility 2 hours after ejaculating). Or, the pH of the sperm could be too acidic. Also, the ranges of the kit are a little off....it says that a normal sperm mortility should be at least 50% with 25% rapid progression...at our lab we only focus on the rapid progression one directional sperm as these are the ones that will make it through the cervix and up to the uterus; we consider a normal sperm motility range to be 40-100%...and it lists a normal sperm count as at least 20 mil... our lab range is 10-150 mil.
I'm not trying to discourage you from buying the kit. I just don't want you to get upset/panick if your results are slightly off...I guess if you suspect that DH sperm has some issues, it could be a starting point....and they are really neat to look at!