Thyroid Hormone Tests. Test Overview. Thyroid hormone tests are blood tests that check how well the thyroid gland is working. The thyroid gland makes hormones that regulate the way the body uses energy. The thyroid gland is a butterfly-shaped gland that lies in front of your windpipe (trachea), just below your voice box (larynx).
A clean room (or cleanroom) is an enclosed space in which airborne particulates, contaminants, and pollutants are kept within strict limits. In industry, clean rooms are used in the manufacture and...
Definition of clean. 1  transitive verb. 2  1a : to make clean: such as (1) : to rid of dirt, impurities, or extraneous matter clean a wound (2) : to rid of corruption vowing to clean up city hallb : remove, eradicate âusually used with up or off clean up that mess.