Fasting Glucose

Fasting glucose measures your blood sugar after roughly 8–12 hours without food — the simplest window into how your body is handling carbohydrate intake.

Reference range

Watch points

High: at or above 126 mg/dL
Borderline: at or above 100 mg/dL

Same thresholds apply to men and women in this table.

Why hard-training athletes watch it

A bulking phase with high carbohydrate intake and reduced cardio can drift fasting glucose upward over months with no obvious symptoms — one of the most useful early markers to track across a bulk and a cut.

When to retest

Retest every 3–6 months during an active bulk, and always fast the full 8–12 hours beforehand — a partial fast skews this number significantly.

Talk to your clinician

Tighten diet and add cardio, and discuss your glucose with your clinician. A single borderline reading is common and often diet-responsive — your clinician may pair it with HbA1c to see the longer trend before drawing any conclusion.