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...
Cleanliness refers to being clean or not messy or dirty: The restaurant's kitchen is regularly inspected for cleanliness. His habits of personal hygiene and cleanliness were learned in the army. She was much concerned with the cleanliness of public bathrooms.