You have two changes at once here. You cannot attribute anything until one of them moves.

A certificate of analysis answers one question and gets quoted as though it answers four.

Reference ranges differ between labs, so comparing two reports is close to meaningless. Same for me with hydromorphone, unfortunately.

Reference ranges differ between labs, so comparing two reports is close to meaningless.

Half of what people describe as tolerance is a change in the underlying condition, and the two need different answers.

Most of the popular protocol is borrowed from a clinical population and applied to healthy people without comment.

Check the register yourself rather than trusting the number printed on the site.