Insulin sensitivity tracking — cheapest reasonable proxy

P
Joined 2026
51 posts
3/13/2026 · 1695 views

Cheap, actionable proxy for IS tracking across a cycle. Full HOMA-IR is fasting glucose + fasting insulin (expensive if not covered). Anything cheaper that's useful?

5 Replies

H
Joined 2026
35 posts
3/15/2026

HbA1c is cheap (~$20 at most labs, sometimes pharmacy-run) and gives you 90-day average glycemia. Not IS per se but the best cheap proxy available.

T
Joined 2026
45 posts
3/15/2026

CGM for 10 days at ~$80 gives you post-prandial excursion data which is IS-adjacent. Actionable within a cycle.

A
Joined 2026
34 posts
3/15/2026

TG:HDL ratio from standard lipid panel is a decent IS proxy. Cheap because it's bundled.

P
Joined 2026
51 posts
3/16/2026

Good suggestions. Probably going to use HbA1c + 10-day CGM as my standard IS tracking going forward.

J
Joined 2026
32 posts
4/23/2026

honestly the cgm route is kinda underrated for this. yeah it costs a bit but you actually see what your body's doing in real time instead of just guessing based on a number. fasting glucose tells you almost nothing about how you're handling carbs mid-cycle when you're probably hammering them. hba1c is useful but it's lagging so much you won't catch problems until they're already baked in. if you're running a cycle and actually care about insulin sensitivity and not just the number, the cgm data is way more actionable imo

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