IGF-1 test timing — when to draw

Morning fasted, 8-12 hours after last dose. IGF-1 doesn't spike with each pulse — it integrates over days — so draw timing within a day matters less than people think, but consistency between draws matters a lot.

Agree. Keep your draw conditions identical every time — same lab, same time of day, same fasted state, same days post-dose. Trend is the data, not any single number.

So: Tuesday 8am, fasted, after Monday pre-bed dose + Tuesday AM dose skipped. Repeat conditions next draw. Got it.