This thesis is concerned with analysing vitamin A deficiency. Vitamin A is crucial for several
functions, including vision, growth, and cell differentiation. the main aim is to develop and …

Vitamin A is an essential micronutrient found in the diet from vegetable sources as
provitamin A carotenoids and from animal sources, supplementation, and fortification as …

Background Assessing vitamin A status in populations remains a high public health priority
for low-and middle-income countries. However, analytical difficulties with serum retinol …

Antioxidant vitamins have been reported to protect against a variety of human malignances
and multiple chronic degenerative diseases therefore it is important to understand factors …

To determine the current vitamin A status of a nationally representative sample of women
aged 16–35 years, compare it with previous national data, and determine the impact of …

Rapid assessment of vitamin A status could be a very useful tool for identifying individuals or
groups at risk of vitamin A deficiency. We have evaluated a portable fluorometer modified to …

Objective: To examine interrelationships between (1) dietary habits,(2) socioeconomic and
(3) environmental factors, and their impact on plasma retinol and plasma ascorbic acid …

Background Serum retinol concentration determined by high-performance liquid
chromatography (HPLC) is recommended by the World Health Organization to assess …

The current use of serum retinol concentrations as a measurement of subclinical vitamin A
deficiency is unsatisfactory for many reasons. The best technique available for vitamin A …

Background Stable isotope techniques using 13 C to assess vitamin A (VA) dietary sources,
absorption, and total body VA stores (TBSs) require determination of baseline 13 C …