LOW THYROID STIMULATING HORMONE (TSH OR THYROTROPIN) TEST RESULT REFERENT VALUES FOR ADULTS. What does lower thyroid stimulating hormone (TSH or thyrotropin) test result referent values level mean for adults?

Lower limit of normal Thyroid stimulating hormone (TSH or thyrotropin) test result referent values for adults is 0.3 (mlU/L).

The test most frequently ordered to test thyroid function is thyrotropin, commonly referred to as thyroid-stimulating hormone (TSH). Based on the functional interrelationship of the hypothalamus, pituitary gland, and thyroid, TSH should be elevated if the thyroid gland is not producing adequate thyroid hormone, and suppressed if it is producing too much.

With the advent of increasingly sensitive TSH tests , the lower limit of detection has been reduced significantly.