Quote from tim on October 11, 2019, 8:03 pm

Cow: 50 mcg/g

Duck: 120 mcg/g

Chicken: 30 mcg/g

Turkey: 80 mcg/g

Goose: 93 mcg/g

Lamb: 154 mcg/g

Pig: 65 mcg/g

Polar bear: 8050 mcg/g

Normal vitamin A concentrations in liver of adults in the United States are reported to be about 100 μg/g with a range of 14 to 160 μg/g (37). Plasma vitamin A concentrations increase when concentrations in the liver reach about 300 μg of retinol per gram, a concentration at which circulating retinyl esters also increase (5). Olson suggested that 300 μg per gram of liver indicates vitamin A toxicity (5).

Let's say that I started with a liver concentration of 300 mcg/g. Using a exponential decay formula of 0.5% per day I should have 77.5 mcg/g after 9 months. 300 mcg/g x 0.995^270 = 77.5 mcg/g

After 1.5 years I should have 19 mcg/g.