Basal Metabolic Temperature Chart

The purpose of this test is to measure your temperature at the lowest point in the day. It is an indirect test for thyroid function. The thyroid hormone functions in the cell by stimulating the energy-producing mitochondria. Heat is created as a by-product of energy production. By measuring the temperature of the body at its lowest point in the day, it is possible to indirectly determine the thyroid function. If there is not enough thyroid hormone produced, then there will be insufficient energy production and, hence, a lower basal temperature. Often, a functional hypothyroid condition can be picked up with this method before it is discernible with blood tests.