Your mother should arrange to see her family doctor (GP) for a check up as soon as she can.

There are many causes for blood in the urine (called haematuria). Often this symptom is due to problems such as infection but it can sometimes be a sign of a cancer. So should never be ignored.

The GP is likely to do a test on a sample of her urine which can detect traces of blood in the urine which may not be visible to the naked eye.

Guidelines suggest GPs should arrange an urgent appointment with a specialist (called a urologist) for anyone who can see blood in their urine. This usually means that the person is seen by a specialist within two weeks.