What does a renal function test evaluate?

A renal function test is a vital diagnostic tool used to assess how well the kidneys are functioning. This test evaluates the ability of the kidneys to filter waste products and excess fluids from the blood, which is essential for maintaining overall health and fluid-electrolyte balance. The primary components of a renal function test include measurements of blood urea nitrogen (BUN), serum creatinine, estimated glomerular filtration rate (eGFR), and sometimes electrolytes such as sodium, potassium, and chloride. These parameters help determine the presence of kidney disease, monitor its progression, and evaluate the effectiveness of treatment.

Keywords associated with renal function tests include kidney health, waste elimination, blood filtration, kidney disease, creatinine levels, BUN, eGFR, electrolytes, and renal health assessment. Elevated levels of BUN and serum creatinine can indicate impaired kidney function, while a decreased eGFR suggests reduced filtration capacity. This test is particularly important for patients with risk factors such as high blood pressure, diabetes, or a family history of kidney disease.

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