Broda Barnes, MD page 5-6
Hypothyroidism : The Unsuspected Illness by Broda Otto Barnes
"Some years ago, seeking a better index of thyroid function, I began to use and still use a simple temperature test. Any patient can self-administer the test at home in ten minutes, and , in fact the test is best carried out at home." "The temperature test has checked out against the basal metabolism and other thyroid tests and has revealed hypothyroidism … when the other tests have failed to do so."
"Place a thermometer, well shaken down, by the bedside at night upon retiring. Upon awakening in the morning, the very first thing…before stirring from bed…reach out for the thermometer, place it in the mouth, and leave it there for ten minutes…while resting quietly."
"In that over the past thirty years…it has been established that normal values for underarm temperatures are in the range of 97.8 to 98.2 degrees Fahrenheit."
"A temperature BELOW 97.8 indicated HYPOTHYROIDISM." "There is no risk of excessive thyroid dosage as long as basal temperature does not exceed 98.2 degree."