Reflects recent dietary folate intake. Rapidly falls with acute deficiency. Red cell folate is a better indicator of tissue stores but less commonly used.
| Sex | Age | Range | Notes |
|---|---|---|---|
| All | ≥ 18 yrs | > 7 | Deficiency <7 nmol/L (approximately <3 ng/mL) |
⚠ Clinical Note
Reference ranges are indicative. Always interpret results in the context of the individual patient and local laboratory reference intervals, which may vary.