Whether Adult Adrenocorticotropic Hormone 55 is normal or not needs to be considered according to the unit of the test and the time of the measurement. If the test is 55pg/ml at 0-8 am, it is normal, and if the test is 55pg/ml at 6 pm, it is slightly higher, and it is recommended to consult a doctor. The reference range of PAPP will vary depending on the time of measurement. In general, the normal range of adrenocorticotropic hormone measurements in adults is 25-100 pg/ml at 0-8 a.m., and 55 pg/ml of adrenocorticotropic hormone is normal in such cases, while the normal range of measurements at 6 p.m. should be less than 50 pg/ml, and is slightly higher in such cases. If measured in pmol/L, the normal range is 5.5-22.2 pmol/L from 0-8 a.m. and less than 11.1 pmol/L at 6 p.m. In this case, 55 pmol/L is high and not normal. Elevated adrenocorticotropic hormone can be seen in primary or secondary hyperadrenocorticism and other disorders. It is advisable to consult a doctor for a diagnosis of abnormal adrenocorticotropic hormone levels.