True Metrix Truemetrix Test Strips 50Ct Box,Pack of 3-150Ct Total 1

These literally say "not for retail sale” on the box. where are these coming from? are they leftovers from a clinic?

Will it work with true metrix preferred plus. if it does not. can it be returned if opened?

Que fecha tienen de vencimiento?

Perhaps a dumb question, but do they work in the cvs true metrix go meter as well? than you.