Symptoms:

• Changes in color of urine - bloody, dark, brown, or rust colored
• Repeated episodes of dark or bloody urine

Signs and tests:

IgA nephropathy usually is discovered after one or more episodes of dark or bloody urine in a person with no other symptoms of kidney disorder.

Bloody urine may begin during or soon after a respiratory infection.

There are no specific changes seen during a physical examination. Occasionally, blood pressure may be high or swelling of the body may be present.

Tests that may be done include:

• Urinalysis
• Kidney biopsy (confirms the diagnosis)
• Urine immunoelectrophoresis