My A1C dropped so fast my doctor thought the lab made an error — looking for input

pat_auckland said:

Fasting insulin is the lab my functional medicine doctor cares about most for glycaemic control: it's a much earlier marker of metabolic dysfunction…

No disagreement, though the timescale matters more than the mechanism here. Most of what looks like a difference in kind turns out to be a difference in how long somebody waited.

julia.endo said:

My labs after 12 months on glycaemic control: A1C 5.3%, fasting glucose 78 mg/dL, fasting insulin 7 uIU/mL.

Genuinely useful, thank you. I had the facts and not the framework. Printing the relevant bit and taking it with me.

pat_auckland said:

Fasting insulin is the lab my functional medicine doctor cares about most for glycaemic control: it's a much earlier marker of metabolic dysfunction…

I do not accept the framing. The question has been narrowed to the version that has a tidy answer, and the part that was dropped is the part the OP actually asked about.

Adding the numbers, since they settle part of this. If you are comparing against somebody else’s result, check that you are comparing the same measurement taken the same way. Most of the apparent contradictions in these threads dissolve at that step.

Moderator note: the sourcing question belongs in the vendor section and has been split out. Tagging this one for the weekly digest.