All lab markers

Vitamins & minerals

Folate

Works with B12 on methylation and red-cell production. Lower results are the ones to watch. A common adult reference interval is 3.9–26 ng/mL.

Typical adult range

Reference interval
3.9–26 ng/mL
Often-cited tighter window
10–24 ng/mL

Serum folate. Your own lab's printed range is the one that applies to your result.

What commonly moves it

  • Absorption problemGut permeability or low stomach acid limits iron, B12 and fat-soluble uptake.

What it can affect downstream

These are commonly described physiological relationships, shared for education. They are not a diagnosis and cannot account for your medications, history, or symptoms — discuss your results with a licensed clinician.

Watching Folate over time?

Dose Compass charts each draw, flags meaningful moves, and helps you prepare questions for your clinician.

Start tracking