Adrenocorticotropic hormone (ACTH) 34.92 ng/L is within the normal range, not low, and the reference range may vary from hospital to hospital. Adrenocorticotropic hormone (ACTH) in adults is normally 7.2-63.3 ng/L (plasma samples collected from 7:00 a.m. to 10:00 a.m.), with slight variations in the normal reference range in each hospital, and it is recommended that a doctor’s diagnosis should be taken as the basis. 34.92 ng/L is generally within the normal range. ACTH levels are useful in diagnosing disorders associated with excessive or inadequate cortisol production in the body, such as Cushing’s syndrome, Addison’s disease, secondary adrenal insufficiency, and hypopituitarism. Some medications may also cause changes in ACTH levels, such as insulin and other medications that cause an increase in ACTH levels, and medroxyprogesterone and others that cause a decrease in ACTH levels. It is advisable to consult your doctor for the results of ACTH tests.