This, in turn, can lead to infections, acne, and other skin problems. If you want an efficient routine, these step-by-step instructions will teach you how to clean makeup brushes in less than five minutes: 1. Turn on your faucet and let the water run until it is warm.
protein-bound iodine test (PBI). Blood test to measure the concentration of thyroxine (T4) circulating in the bloodstream. The iodine becomes bound to theprotein in the blood and can be measured. Useful in extablishing thyroid function.
Even the names of the different forms of thyroid hormone reflect the number of iodine molecules attached -- T4 has four attached iodine molecules, and T3 (the biologically active form of the hormone) has three -- showing what an important part iodine plays in thyroid biochemistry.