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

Is a baseline blood test really necessary before starting something like this?

Is a baseline blood test really necessary before starting something like this? A fortnight in on GHK-Cu and it lines up.

Is a baseline blood test really necessary before starting something like this?

Is a baseline blood test really necessary before starting something like this?

Sorry for the basic question, but how do you actually start one of these diaries? Same for me with checking the batch number, unfortunately.

Following this because I am in the same place and have no idea what to ask at the appointment. Not on a deductible but the pattern is familiar.