The most reliable and commonly used methods for determining<unk>  status in the body are: *excretion of 3-hydroxyisovaleric acid and<unk>  in urine * activity of propionyl-CoA carboxylase in lymphocytes
Biotin deficiency
Chromium deficiency
Copper deficiency
Fluorine deficiency
Boron deficiency 
Selenium deficiency
Manganese deficiency 
Thiamine deficiency