Korean J Community Nutr.
1999 Dec;4(4):512-520.
Blood Folate Level Determined by a Microplate Reader and Folate Intake Measured by a Weighted Food Record
- Affiliations
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- 1Department of Food and Nutrition, chungbuk National University, cheongju, Korea.
Abstract
- Microbiological method using a 96-well microplate reader for folate assay was established, and folate intake and blood folate concentrations of 23 female college students were assessed. To evaluate folate intake, dietary data were collected by a 3-day weight food record, and serum and RBC folate concentrations were measured by the new method. The coefficient of variation for the new method was less than 10%. Mean daily folate intake of the subjects was 126.7ug which is only 50.7% of the RDA. The mean concentrations of serum and RBC folate were 7.46ng/ml and 294.4ng/ml, respectively, which were within the normal range. These results indicate that folate intake seems to be underestimated due to incomplete food composition database. Therefore, folate database should be appropriately in order to asses folate intake accurately.
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