Dietary Reference Intakes for Thiamin, Riboflavin, Niacin, Vitamin B6, Folate, Vitamin B12, Pantothenic Acid, Biotin, and Choline

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Dietary Reference Intakes for Thiamin, Riboflavin, Niacin, Vitamin B6, Folate, Vitamin B12, Pantothenic Acid, Biotin, and Choline (1998)
Institute of Medicine (IOM)

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. "5 Riboflavin." 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

EGRAC^a	Urinary Excretion of Riboflavin	Erythrocyte Riboflavin	Other
43% abnormal^k 43% abnormal 100% normal 100% normal	NA	NA	NA
Abnormal^l Abnormal Abnormal Abnormal Normal Normal	Abnormal^m Abnormal Abnormal Normal Normal Normal	NA	Normalⁿ Normal Normal Normal Normal Normal
NA	Normal^d	NA	Normal^o
NA	Abnormal^d Normal	NA	Abnormal^p Normal
NA	Abnormal^d Abnormal Abnormal Abnormal Normal Normal Normal Normal	NA	Abnormal^q Normal Normal Normal Normal Normal Normal Normal
NA	NA	Abnormal^r Abnormal 63% abnormal Normal^s Normal	50% abnormal^t 30% abnormal Normal Normal Normal
^cNA = not applicable. ^d Abnormal urinary excretion = < 266 nmol (100 µg)/d of riboflavin (based on Sauberlich et al., 1974). ^e Abnormal = symptoms of cheilosis. ^f Normal = no signs or symptoms of deficiency (i.e., no ulcers around the mouth, no changes in the eyes, normal pyruvic and lactic acid levels, no anemia).