Table 3.

Red blood cell folate (ng/mL )response to supplementation (s.e.)

	week 0	week 12
DOSE 0 μg		0
Treatment Group A First period (n=42)	516 (29)	505 (27)
Treatment Group B (After washout) (n=34)	586 (33)	571 (34)
Dose 200μg		200
Treatment Group B (First period) (n=34)	562 (34)	584 (29)
Treatment Group C (First period) (n=34)	520 (40)	546 (42)
Treatment group A (After washout) (n=42)	533 (26)	566 (27)
Treatment Group D (After washout) (n=32)	583 (41)	552 (31)
Dose 400μg		400
Treatment Group D (First period) (n=32)	517 (23)	603 (33)
Treatment Group C (After washout) (n=34)	528 (26)	654 (44)