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

How do you tell the difference between the drug working and just a good week?

You have two changes at once here. You cannot attribute anything until one of them moves. A year in on a password manager and it lines up.

Ten percent cuts, of the current dose not the original. That is the arithmetic that keeps it survivable. Currently on amitriptyline myself.

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