Below is an instruction from Human. Write a response.
    ### Instruction:
    How to diagnose IgA Nephropathy ?
    ### Response:
    Currently, health care providers do not use blood or urine tests as reliable ways to diagnose IgA nephropathy; therefore, the diagnosis of IgA nephropathy requires a kidney biopsy.
                
A kidney biopsy is a procedure that involves taking a small piece of kidney tissue for examination with a microscope.
    