Fasting Glucose — Baseline Metabolic Marker
Plasma glucose measured after an 8–12 hour fast. The simplest standalone metabolic marker, available on every basic panel.
Fasting glucose is the plasma glucose measured after an 8–12 hour fast, the simplest standalone metabolic marker. It is less sensitive than fasting insulin to early dysfunction but available on every basic panel.
Watch the 34-second version
The cheapest metabolic number on your panel, and the one most people read too generously.
Transcript & sources → All videosMr. Age is AgeGen's editorial character. Facts come from the protocol above.
The biomarker
- Name: Fasting Glucose
- Units: mg/dL
- Standard reference range: 70–99 (normal); 100–125 (pre-diabetic); ≥ 126 (diabetic, two readings)
- Optimal range: 75–90
How to read your result
| Value | Interpretation |
|---|---|
| < 75 | Low — consider repeat |
| 75–90 | Optimal |
| 90–99 | Normal but trending — pair with insulin |
| 100–125 | Pre-diabetic |
| ≥ 126 | Diabetes — confirm and see clinician |
What moves the needle
- Diet. Reduce refined carbs, add fibre.
- Sleep. 7–9 h.
- Testing. Add fasting insulin and HbA1c for full picture.
- Movement. Daily walks + 2x strength.
Why this test is worth asking for
- It is the simplest standalone metabolic marker — one fasted draw, on every basic panel, with a clear cut-off structure.
- A value that is normal but trending (90–99) is an early prompt to pair it with fasting insulin before glucose itself drifts up.
- Combined with HbA1c, it builds a fuller metabolic picture without specialist testing.
Related protocols
- HbA1c — Three-Month Glucose Average
- Urine ACR — Early Kidney Marker
- Uric Acid — Metabolic + Gout Marker
Sources
AgeGen lab guides are educational only. We do not provide medical diagnosis, prescribe brands, or recommend specific doses. Talk to a licensed clinician before changing your supplement or medication routine.
