Blood tests do not diagnose hypertension, but they are a key part of the workup. Learn which labs are commonly ordered for high blood pressure and how they help assess kidney function, electrolytes, diabetes risk, cholesterol, thyroid disease, and secondary causes.
A high or low renin result is usually interpreted with aldosterone, potassium, sodium intake, posture, and medications. Learn what common result patterns may mean and what to ask next.
A renin blood test measures kidney-related hormone activity involved in blood pressure, sodium, potassium, and aldosterone balance. Learn when it is ordered, how to prepare, what high or low renin can mean, and how results are interpreted with aldosterone.
