Blood in urine what it can mean

Overview

Blood in urine, also known as haematuria (heem-uh-TUR-ee-uh), means there are red blood cells in your pee. It can be visible (turning urine pink, red, or cola-coloured) or invisible (only found on a urine test). Often it is harmless, but it can sometimes be a sign of another condition that needs treatment.

Yes, blood in urine is quite common. Many people experience it at some point, and most causes are not serious.

It can affect people of all ages, but certain causes are more common in children (infections), young adults (kidney stones), and older adults (enlarged prostate, bladder issues).

Symptoms

Common symptoms

• Pink, red, or brown urine
• Foamy or fizzy urine (may indicate protein, not just blood)
• Pain or burning when peeing
• Needing to pee often or urgently

Symptoms in children

• Often no other symptoms – blood found on a urine test
• May have fever, pain in the belly or side
• Reddish nappy (if infant)

Symptoms in older adults

• Painless visible blood in urine (requires urgent check)
• Difficulty starting or stopping urine stream
• More frequent nighttime peeing
• Back or pelvic pain

Causes

Main causes

• Urinary tract infection (UTI) – infection in the bladder or kidneys
• Kidney stones – hard mineral deposits that can scrape the urinary tract
• Enlarged prostate (in men) – common over age 50
• Kidney disease – including glomerulonephritis (inflammation of kidney filters)
• Bladder or kidney cancer – rare but important to rule out, especially in older adults
• Strenuous exercise – sometimes causes temporary blood in urine
• Medications – certain blood thinners or antibiotics can cause it

Risk factors

• Being over 40
• Smoking or tobacco use
• Family history of kidney disease or kidney cancer
• Long-term use of certain painkillers (like aspirin or ibuprofen) without medical advice
• Repeated kidney infections or stones
• Occupational exposure to certain chemicals (e.g., dyes, rubber, leather)

When to see a doctor

See a doctor urgently if:

• Any visible blood in urine, even once
• Blood in urine with fever, pain, or difficulty peeing

Book a routine appointment if:

• If you had a dipstick test and it showed blood but no other symptoms
• If you have repeated episodes of invisible blood on tests
• If you are over 50 and have never had a urine check
• If you have a family history of kidney or bladder problems

Diagnosis

Your doctor will start by asking about your symptoms, medical history, and doing a urine test (dipstick) to confirm blood. They may also check for infection or other markers.

Tests that may be done

• Urine dipstick test – a quick test using a strip
• Urine microscopy – looking at the urine under a microscope for red blood cells or casts
• Urine culture – to check for a bacterial infection
• Blood tests – to check kidney function and other markers
• Imaging tests (ultrasound, CT scan) – to look at the kidneys, bladder, and urinary tract
• Cystoscopy – a thin camera tube to look inside the bladder (usually done if cancer is suspected)

What to expect at your appointment

The process can take a few weeks. Most people will start with simple tests. If needed, your doctor will refer you to a specialist (urologist or nephrologist) for further checks.

Treatment

Treatment depends entirely on the cause. Many causes (like mild infections) clear up with simple self-care or medication. Others (like stones or enlarged prostate) may need specific medical treatments. Your doctor will create a plan based on your diagnosis.

Self-care at home

• Drink plenty of water – aim for at least 6-8 glasses a day unless advised otherwise by your doctor
• Avoid holding urine – empty your bladder when you need to
• If you have an infection, follow the course of antibiotics exactly as prescribed
• If you exercise heavily, reduce intensity and stay hydrated to prevent further irritation

Medical treatments

Depending on the cause, your doctor may prescribe antibiotics for infection, medications to help pass kidney stones, or treatments to shrink an enlarged prostate. For more serious conditions like kidney disease or cancer, treatment may involve specialist therapies, which your doctor will explain in detail. Always follow your healthcare provider's advice – do not stop or change treatment on your own.

When is surgery considered?

Surgery is sometimes needed for large kidney stones that do not pass, an enlarged prostate causing blockage, or for removal of tumours. Your specialist will discuss if surgery is an option and what it involves.

Living with this condition

If you have had blood in urine and the cause is found to be harmless, you can usually go back to normal life. If you have an ongoing condition like kidney disease, you may need regular check-ups and monitoring. It helps to keep a symptom diary (note if you see blood, pain, or other changes) to share with your doctor.

Lifestyle tips

• Stay well hydrated – water is best
• Avoid smoking – smoking is a major risk factor for bladder cancer
• Limit alcohol – it can irritate the bladder
• Practice good hygiene – especially for women, to prevent UTIs

Diet and exercise

A balanced diet rich in fruits, vegetables, and whole grains supports kidney health. If you have kidney stones, your doctor may recommend limiting salt and certain foods (like red meat and oxalate-rich foods). Regular moderate exercise is good, but avoid extreme workouts if they trigger bleeding.

Mental health and emotional wellbeing

Seeing blood in your urine can be frightening and cause anxiety. It is normal to worry, but remember that most causes are treatable. Talk to your doctor or a counsellor if you feel overwhelmed. You are not alone.

Prevention

Not all causes can be prevented, but you can lower your risk by staying hydrated, not smoking, and seeking prompt treatment for UTIs or kidney stones. Regular check-ups can help catch problems early.

Screening programmes

There is no routine screening for blood in urine in the general population. However, if you are at high risk (e.g., smoker over 65), your doctor may suggest occasional urine tests.

Complications

If left untreated

• Untreated urinary tract infection can spread to the kidneys and cause serious illness
• Kidney stones can grow and cause blockage, leading to kidney damage
• Enlarged prostate can cause permanent bladder damage or kidney failure if ignored
• Cancer missed can become harder to treat

Long-term outlook

For most people, the outlook is very good. Even when the cause is serious, early detection and treatment improve outcomes significantly. Your healthcare team will support you every step of the way.

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