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Table 1 Mean red cell (μg/L) and serum folate (μg/L) concentrations at recruitment (n = 19).

From: Folic acid fortification and public health: Report on threshold doses above which unmetabolised folic acid appear in serum

  Serum folate Red cell folate Folic acid
Mean 7.60 477.97 0.00
SD 4.25 173.99 -------
CI (95%) 5.55 – 9.65 364.10 – 531.83 -------
  1. This table illustrates mean baseline red cell (μg/L) and total serum folate concentrations (μg/L) at recruitment (n = 19). No subjects had detectable serum folic acid at baseline (>0.312 μg/L).
  2. Normal reference range for red cell folate is in the range of 150–1000 μg/L and for total serum folate is 2.7–20 μg/L
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