Reference ranges The European Food Safety Authority (EFSA) recommends a dietary allowance of 70 μg per day<unk>  intake for adults. In the US, the Dietary Reference Intake for adults is 55 µg/day. In the UK it is 75 µg/day for adult males and 60 µg/day for adult females. 55 µg/day recommendation is based on full expression of plasma glutathione peroxidase. Selenoprotein P is a better indicator of<unk>  nutritional status, and full expression of it would require more than 66 µg/day.
Selenium deficiency
Fluorine deficiency
Chromium deficiency
Boron deficiency 
Biotin deficiency
Copper deficiency
Thiamine deficiency
Zinc deficiency