Measures retinol (vitamin A) level in blood, reflecting recent vitamin A status. Vitamin A supports vision, skin, and immune function; levels can drop with poor absorption or severe deficiency.
Used when vitamin A deficiency is suspected (night vision problems, poor growth, malabsorption) or when toxicity is a concern from high-dose supplements, especially in liver disease.
We use analytics cookies to understand how the site is used. They are only set if you accept, and we never send your test or package details to any analytics service. Privacy Policy