Adrenaline can be checked and evaluated through blood tests, and also through instruments that examine the adrenal glands as a gland to assess adrenaline levels from the side. Blood tests usually require fasting blood to test the level of adrenaline in the blood, which can determine the level of adrenaline secretion. Ultrasound, CT and MRI are the main instruments that can accurately determine the size of the adrenal gland and reflect the level of adrenaline secretion. The adrenal gland is a small gland in the upper part of the kidney, which mainly secretes adrenaline and plays an important role in stress and biological mediation.