. "K Blood Concentrations of Folate and Vitamin B12 from the Third National Health and Nutrition Examination Survey (NHANES III), 1988–1994." Dietary Reference Intakes for Thiamin, Riboflavin, Niacin, Vitamin B6, Folate, Vitamin B12, Pantothenic Acid, Biotin, and Choline. Washington, DC: The National Academies Press, 1998.
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DRI Dietary Reference Intakes: For Thiamin, Riboflavin, Niacin, Vitamin B6, Folate, Vitamin B12, Pantothenic Acid, Biotin, and Choline
TABLE K-4 Serum Homocysteine (µmol/L) of Persons Aged 12 Years and Older: Mean and Selected Percentiles, United States, 1991–1994
Gender and Age (y)
Number of Examined Persons
Mean
Standard Error of the Mean
M, 12–13
177
6.61
0.20
M, 14–18
395
8.39
0.34
M, 19–30
816
10.29
0.26
M, 31–50
1,055
9.93
0.20
M, 51–70
821
11.94
0.49
M, >70
502
13.40
0.49
F, 12–13
226
6.19
0.22
F, 14–18
448
7.08
0.19
F, 19–30
938
8.05
0.15
F, 31–50
1,446
8.36
0.16
F, 51–70
937
9.68
0.19
F, >70
681
11.83
0.36
Pregnant F, 14–55
143
5.41
0.36
Both, ≥12, unadjusted
8,585
9.51
0.09
a Value does not meet standard of reliability or precision.
SOURCE: NHANES III, 1988–1994, unpublished data, C.L.Johnson and J.D.Wright, National Center for Health Statistics, Centers for Disease Control and Prevention, 1997.
