Tsh thyroid stimulating hormone is 2.380 is that normal? I know it is suppost to be between 0.30 4.70 acceptable range but don't understand it still

Thyroid test. Tsh is a hormone released by the pitutary gland and is negatively cycled in response to thyroid hormone levels, high levels of thyroid cause a drop in TSH and vica versa. The range of TSH is affected by physiological factors such as sleep , circadian variation, food intake and sleep but within the narrow range you quote there is also variations due to measurement called interassay variation.