What are the parameters involved in kidney function test?

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I would like to know the parameters involved for kidney function test?

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The most common kidney function test is conducted through a blood sample to check the functionality levels of the kidney. Now, if your kidney function test via blood shows a result of a value of 60 or any number higher, it is considered a normal range indicating healthy kidneys. However, if the reports show a value below 60, it can mean that a disease or infection has attacked your kidney. The most alarming range, however, is when the test results show a value of 15 or below, which is a direct indication of kidney failure and thus requires immediate doctor attention.