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.
LEC (local exchange carrier) is the term for a public telephone company in the U.S. that provides local service. Some of the largest LECs are the Bell operating companies (BOCs) which were grouped into holding companies known collectively as the regional Bell operating companies (RBOCs) when the Bell System was broken up by a 1983 consent decree.