From: Dietary and other lifestyle correlates of serum folate concentrations in a healthy adult population in Crete, Greece: a cross-sectional study
Serum folate quartiles (age & gender-specific)
Q1
Q2
Q3
Q4
Geometric mean
p for trend1
Serum total homocysteine (μmol/L)
12.4
10.3
10.2
10.1
<0.001
Serum vitamin B12 (pmol/L)
307.5
305.2
310.4
286.1
-2