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What Are Normal Blood Pressure Levels In Children?
Renin is a protein (enzyme) released by special kidney cells when you have decreased salt (sodium levels) or low blood volume.
Renin also plays a role in the release of aldosterone, a hormone that helps control the body's salt and water balance.
A test can be done to measure the amount of renin in your blood.
Alternative Names
Plasma renin activity; Random plasma renin; PRA
How the test is performed
Blood is drawn from a vein, usually from the inside of the elbow or the back of the hand....
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