Elevated homocysteine levels are associated with ... 15.5 µmol/L), and half had normal levels (mean, 9.0 µmol/L). Patients were randomized to receive a B-vitamin supplement (5 mg folic acid ...

His weight was normal, and his blood pressure was ... 400 µg of folic acid per day for 2 months. His repeat homocysteine level was less than 2 µmol/L. The patient is currently taking 400 µg ...

The same subjects were also classified according to blood levels of homocysteine, with up to 10 µmol/l being considered normal, 10–15 µmol/l moderate, and more than 15 µmol/l high.