Dr. Garrett Smith, the “Nutrition Detective”, discusses all the major types of testing for Vitamin A and how they relate to chronic Vitamin A toxicity, including:
– Beta-carotene
– Retinyl esters and retinyl palmitate
– Retinol-Binding Protein (RBP)
– Retinol isotope dilution
– Retinoic acid
– Serum retinol (aka blood Vitamin A), including the range Dr. Smith looks for to show toxicity
– Liver biopsy
Enjoy!
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