Hypothyroidism is one of the most common causes of elevated TSH levels, the National Institute of Diabetes and Digestive and Kidney Disorders explains. The pituitary makes TSH to stimulate the production of thyroid hormones.
How is Frequency Recency Amount and Category abbreviated? FRAC stands for Frequency Recency Amount and Category. FRAC is defined as Frequency Recency Amount and Category very rarely. FRAC stands for Frequency Recency Amount and Category.
Fire Resistant/Retardant Clothing (FRC) FRC is mandatory for all areas of offshore production or drilling facilities other than living production or drilling facilities, other than living quarters/accommodation unless a sign or field directive is posted to the contrary. Other locations (e.g. shorebases and construction barges) may also have areas designated where FRC is required.