Diagnosis of kidney stones

Doctors can usually diagnose kidney stones by asking about symptoms and doing a physical examination. Further tests may be done to confirm the diagnosis, reveal the size, location and identity of the stone. These include:

# Blood tests: to identify excess amounts of certain chemicals related to the formation of stones.

# Urine analysis: patients are asked to give a urine sample for testing, and may be asked to collect urine over 24 hours to analyse it for the chemicals that cause stones.

# X-rays: stones that contain calcium show up white on the X-ray.

# Intravenous urogram (IVU): an X-ray involving an injection of special dye to show up stones that can’t be seen with X-rays alone.

# Ultrasound scan: this uses high frequency sound waves to produce an image of the internal organs.

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