Test kits for underdosing

[MoJim]

There are many tests kits for pill identification and F, but I can't seem to find any that will test for quality/underdosing. After reading the Bottle of Lies-generic drugs thread and of course the differing opinions on any vendors offerings, it would be nice to have something to test not just iop but rx as well. Most of us don't have access to state of art labs for testing. If anyone knows of an inexpensive test kit or method/DIY it could be very helpful in weeding out bunk vendors. Since we all react differently to any med and have different tolerances any reviews, though well intentioned, are helpful but anecdotal.

Hmmmm maybe a kit eg. B's would show a color for positive and if that color is darker or lighter, would that indicate a high or lower dosage? Any insight would be appreciated.
Thanks