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EGRACa

Urinary Excretion of Riboflavin

Erythrocyte Riboflavin

Other

43% abnormalk

43% abnormal

100% normal

100% normal

NA

NA

NA

Abnormall

Abnormal

Abnormal

Abnormal

Normal

Normal

Abnormalm

Abnormal

Abnormal

Normal

Normal

Normal

NA

Normaln

Normal

Normal

Normal

Normal

Normal

NA

Normald

NA

Normalo

NA

Abnormald

Normal

NA

Abnormalp

Normal

NA

Abnormald

Abnormal

Abnormal

Abnormal

Normal

Normal

Normal

Normal

NA

Abnormalq

Normal

Normal

Normal

Normal

Normal

Normal

Normal

NA

NA

Abnormalr

Abnormal

63% abnormal

Normals

Normal

50% abnormalt

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).



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