HOMA-IR tracking on GLP-1 — looking for input

Answering the narrow version, because the broad one does not have a single answer. HbA1c reflects roughly three months of average glycaemia weighted toward the most recent weeks, which is why repeating it at six weeks tells you very little. The improvement on this class comes from two directions — direct glucose-dependent insulin secretion and glucagon suppression, plus the indirect effect of weight loss on insulin sensitivity — and the second continues after the first has plateaued.

anders_CPH said:

HbA1c reflects roughly three months of average glycaemia weighted toward the most recent weeks, which is why repeating it at six weeks tells you very…

Agreed, with the caveat that HbA1c is unreliable in anaemia, haemoglobinopathies and recent blood loss, all of which are commoner than people assume. If it disagrees with fasting glucose or a CGM, that is worth chasing.

FDA_TrackerJim said:

Living somewhere the domestic route does not exist, which makes most of the advice on this board inapplicable to me.

Same pattern here, and in the same order. The detail I would add is minor and it is already implied above.

Clinical perspective, offered as context rather than as advice.

International shipping tracking for cross-border ordering orders: my experience with customs in the US when ordering from overseas:

Held at customs for 5 days, then released.

Tips: always include a copy of your prescription, declare medication properly on customs forms, keep quantities reasonable (personal use = 3 month supply max), and use a vendor who has experience shipping to your country.