Typically, is a treatment for renal failure that is meant to substitute for kidney function until can be performed.

Dialysis filters waste and excess fluid from the blood, taking over some kidney functions while a patient awaits a kidney transplant or other treatment. An adrenalectomy removes an adrenal gland, and a kidney biopsy takes a tissue sample; neither substitutes for kidney function. A kidney transplant can restore kidney function, but it is not the temporary treatment described.

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