. "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-2 Erythrocyte Folate (ng/mL) of Persons Aged 4 Years and Older: Mean and Selected Percentiles, United States, 1988–1994
Gender and Age (y)
Number of Examined Persons
Mean
Standard Error of the Mean
Both, 4–8
3,157
222
12.6
M, 9–13
1,137
202
4.2
M, 14–18
864
164
4.4
M, 19–30
1,853
164
2.8
M, 31–50
2,484
182
3.0
M, 51–70
1,968
216
4.5
M, >70
1,266
242
7.3
F, 9–13
1,145
175
3.4
F, 14–18
934
157
4.0
F, 19–30
1,917
168
3.3
F, 31–50
2,924
194
3.4
F, 51–70
2,059
238
5.5
F, >70
1,374
259
7.3
Pregnant F, 14–55
322
261
12.5
Both, ≥4, unadjusted
23,404
197
1.2
NOTE: Values have been adjusted by following recommendations in Life Sciences Research Office/Federation of American Societies for Experimental Biology. 1994. Assessment of the Folate Methodology Used in the Third National Health and Nutrition Examination Survey (NHANES III, 1988–1994). Raiten DJ, Fisher KD, eds. Bethesda, MD: LSRO/ FASEB. Values are presented as received from source.
