What is mcg RAE?
mcg RAE is a unit of measurement for vitamin A.
How to convert mcg RAE to other forms?
1 IU retinol = 0.3 mcg RAE
1 IU supplemental beta-carotene = 0.3 mcg RAE
1 IU dietary beta-carotene = 0.05 mcg RAE
1 IU dietary alpha-carotene or beta-cryptoxanthin = 0.025 mcg RAE
RAE can only be directly converted into IUs if the sources of vitamin A are known.
900 mcg RAE is equal to 3,000 IU of preformed vitamin A (retinol) or beta-caroene (1)
900 mcg RAE is equal to 18,000 IU of beta-carotene (1)
900 mcg RAE is equal to 36,000 IU alpha-carotene or beta-cryptoxanthin (1)
Resources
1. https://ods.od.nih.gov/factsheets/VitaminA-HealthProfessional/
