A 32-year-old female asked:
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can morning low basal body temperature be a sign of hypothyroidism mine between 96.08-97.7 for the last 18 mornings (before rising).

1 doctor answer
Dr. Robert Lang
51 years experience Endocrinology
May be hypothyroid: If you are not very ill, which can lead to a low temperature, and the temp is below 97. 6, you may be hypothyroid. Remember, 98.6 is average, normal can be 1 degree above or below. The temperature normally goes down at night and is lowest about 4:00-6:00 A.M. About 2 hours before awakening. Then it can be as low as 97. Tsh testing will be the most sensitive test to diagnose hypothyroidism.
Answered on Sep 15, 2017
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