Your kidneys have tiny filters called glomeruli which remove waste and excess fluid from blood. A glomerular filtration rate (GFR) is a blood test that checks how well your kidneys work by estimating how much blood passes through these filters each minute.
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Overview:
Your kidneys have tiny filters called glomeruli which remove waste and excess fluid from blood. A glomerular filtration rate (GFR) is a blood test that checks how well your kidneys work by estimating how much blood passes through these filters each minute.