Is blood in the urine always serious?

Why any blood in the urine — even once, even painless — should be checked.

3 min read

The short answer: blood in the urine is often caused by something minor, but it should always be assessed — even if it happens only once and there is no pain.

Common causes include infection, kidney stones and an enlarged prostate. Less commonly, blood in the urine is the first sign of a bladder or kidney cancer, which is why guidelines recommend assessment for everyone.

Assessment usually involves urine tests, blood tests and an ultrasound or scan. Many patients are reassured quickly; for others, early assessment means early treatment.

Do not wait for it to happen again. Request an appointment and mention that you have seen blood in your urine.

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