The Hypertension 5 is a test used to differentiate primary hypertension from secondary hypertension, and includes five indicators: renin, angiotensin, aldosterone, adrenocorticotropic hormone, and cortisol. The testing of these 5 indicators can help to distinguish whether the cause of hypertension is primary or secondary. If the levels of all five tests are within the normal range, it is considered that primary hypertension is more likely, and if any of the five tests are significantly abnormal, it is considered that secondary hypertension is more likely. If there is any abnormality, it is recommended to consult a doctor in time and follow the doctor’s instructions for treatment.