retinol equivalent


retinol equivalent
(RE) the specific biological activity of 1.0 microgram of all-trans retinol, 6.0 micrograms of β-carotene, or 12.0 micrograms of other provitamin A carotenoids; it is equivalent to 3.3 international units of vitamin A activity from retinol (10 from β-carotene).

Medical dictionary. 2011.