Dr.AddMedPHL said:

A defensible baseline is short: HbA1c and fasting glucose, a lipid panel with ApoB if you can get it, ALT and AST, creatinine with eGFR, TSH, ferritin…

The concept of "metabolic set point" and its relevance to maintenance dosing: the body actively defends a weight set point through hormonal feedback (leptin, ghrelin, insulin, GLP-1). After weight loss, these signals shift to promote weight regain[1].

GLP-1 agonists may work in part by resetting this set point — or at least overriding the counter-regulatory signals that drive regain. This would explain why continued treatment maintains weight loss while discontinuation leads to regain.

Understanding maintenance dosing through this lens reframes the drug from "weight loss tool" to "metabolic set point modulator."

LindaRN_retired said:

Agreed, and reference ranges are laboratory-specific.

Thank you — that is the clearest version of this I have read, and I have read a lot of them.

Dr.AddMedPHL said:

A defensible baseline is short: HbA1c and fasting glucose, a lipid panel with ApoB if you can get it, ALT and AST, creatinine with eGFR, TSH, ferritin…

This is where I part company with the consensus forming above. I would drop the "get everything" instinct further than this thread does. Every extra test is another chance at a false positive, and incidental findings have their own cost in scans, biopsies and worry.

quinn_sf said:

I am eight weeks into deliberately reducing rather than stopping, and the appetite change came back faster than the weight did.

STEP 5 long-term data on maintenance dosing: the 104-week (2-year) extension showed sustained weight loss of -15.2% with continued semaglutide vs weight regain in the discontinuation group[1].

Key insight: weight loss continued to accrue between weeks 68 and 104 in many patients, suggesting the nadir may not occur until year 2+. The 68-week primary endpoint in most trials may underestimate maximal efficacy.

This supports long-term, open-ended treatment rather than fixed-duration "courses" of therapy.

Moderator note: good thread. Keeping it here rather than moving it, because the question is general enough to be useful. Carry on.