Blood sample from a patient is collected to measure the level of Vitamin A. Vitamin A deficiency can cause night blindness, Xerophthalmia which produce tears all time, keratinization of the skin and mucous membranes in the respiratory, gastrointestinal tract, and urinary tracts and growth retardation in kids.
To detect vitamin A deficiency or toxicity when you have symptoms suggesting a vitamin A deficiency or excess, or are at risk for a deficiency.
Typically the liver stores 80-90% of the body’s vitamin A. The normal result for Vitamin A for Vitamin A (Retinol) levels in blood is 0.30 – 1.20 mg/L for Unisex gender and for All age groups.
