Screening for vitamin c status.

Screening for vitamin c status.

Assessment of vitamin C status.

Vitamin C is L-xyloascorbic acid (ascorbic acid, AA). Its first oxidation product is dehydroascorbic acid (dehydroAA) which also possesses vitamin C activity, possibly because of the ease with which many animal tissues can reduce it back to AA (Grimble & Hughes, 1967). AA and dehydroAA may be referred to as ‘total vitamin C’. T h e determination of AA, or of AA and dehydroAA, is central to all ...

Agreement among indicators of vitamin C status.

Agreement among three indicators of vitamin C status--serum ascorbate level, a 24-hour recall, and the frequency of fruit and vegetable consumption--was examined using data from the Second National Health and Nutrition Examination Survey conducted between 1976 and 1980. Agreement between pairs of these indicators was good when assessed at the group level but inconsistent at the individual level...

Vitamin C: prospective functional markers for defining optimal nutritional status.

Most species of plants and animals synthesize ascorbic acid, but human subjects cannot, making vitamin C an essential component of our diet. Relationships between vitamin C intake and status, and between status and health are not yet clear. There is evidence, however, that higher intake of vitamin C is associated with lower risk of disease, supporting the concept that optimal intake is needed f...

vitamin c status in allergic children

this study was undertaken to assess vitamin c status in allergic children. twenty-six allergic patients and 46 apparently healthy controls aged 7-16 years of both sexes were introduced. all patients were diagnosed being allergic based on their histories, physical examinations and laboratory findings. blood samples were obtained between 09.00-11.00 to determine total serum immunoglobulin e, hist...