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...
Cleanroom Related Definitions. As Built: A functioning room with no furniture, process equipment, or personnel. Normally found only on new rooms. Very easy to pass. At Rest: Fully operational room with furniture, process and support equipment in place but not operating. The most common tested condition, also easy to pass, because no particles are being generated within the room. Ceiling Grid: Type or style of prefabricated ceiling system used in a cleanroom.