Seeing blood when passing urine can be unsettling. It may look pink, red, brownish, tea-coloured, or cola-coloured. In some cases, the urine looks normal, but blood is found during a urine test.
This condition is also known as haematuria. It can happen for several reasons, including urinary tract infection, kidney or bladder stones, prostate conditions, kidney problems, medication, or bladder-related conditions. Some causes are less serious, but visible or recurring urinary bleeding should still be checked.
If you notice visible blood when passing urine, or if blood is found repeatedly on urine tests, consider seeing a urologist to assess for possible bladder or urinary tract conditions.
Quick Answer
Blood in urine should be checked, especially if it is visible, happens more than once, appears without pain, or comes with clots, fever, pain, or difficulty passing urine. Common causes include urinary tract infection and kidney or bladder stones, but bladder, kidney, or prostate conditions may also need to be ruled out.
What Blood in Urine Can Look Like
Blood in urine does not always look bright red. Some people notice a clear change in urine colour. Others only find out after a routine urine test.
There are two main types:
- Visible haematuria: urine looks pink, red, brownish, tea-coloured, or cola-coloured.
- Microscopic haematuria: urine looks normal, but blood is detected during a urine test.
Both visible and microscopic blood in urine may need medical review if they are persistent or unexplained.
Common Causes of Blood in Urine
The bleeding can come from different parts of the urinary tract, including the kidneys, ureters, bladder, prostate, or urethra.
Common causes include:
- Urinary tract infection
- Kidney or bladder stones
- Prostate enlargement or inflammation
- Kidney conditions
- Bladder inflammation or growths
- Certain medications or recent injury
Sometimes, haematuria comes with pain, burning, fever, or difficulty passing urine. Other times, there may be no discomfort at all. Painless haematuria should still be checked, especially in older adults or people with a smoking history.
When Is Urinary Bleeding More Concerning?
Haematuria should be taken seriously when it is visible, persistent, or unexplained. It can also be more concerning when it happens without pain, because some serious causes may not produce discomfort early on.
| Situation | What it may suggest |
| Red, pink, brown, or tea-coloured urine | Bleeding somewhere in the urinary tract |
| Clots when passing urine | More significant bleeding that should be assessed promptly |
| Painless haematuria | Still needs checking, especially in older adults or smokers |
| Bleeding with burning or frequent urination | Possible urinary tract infection or bladder irritation |
| Bleeding with side or back pain | Possible stone or kidney-related cause |
| Bleeding with fever or inability to pass urine | Needs prompt medical attention |
Painless blood in urine in older patients may require closer evaluation, especially in higher-risk groups.
Can Blood in Urine Be a Bladder Problem?
It can be. The bladder is one possible source of urinary bleeding. This may happen with infection, stones, inflammation, or abnormal growths.
Some people may also notice urgency, frequent urination, burning, or lower abdominal discomfort. Still, symptoms alone cannot confirm where the bleeding is coming from. It may also come from the kidneys, prostate, ureters, or urethra.
If bladder-related symptoms are present, a urologist can help check the possible source and advise on the next step.
When Should You See a Urologist in Singapore?
You should consider seeing a urologist if blood in urine is visible, keeps recurring, appears without a clear reason, or is found repeatedly on urine tests.
This is especially important for older adults, smokers, or anyone with urinary symptoms such as pain, urgency, frequent urination, or difficulty passing urine. Seek prompt medical attention if there is heavy bleeding, large clots, fever, severe pain, or inability to pass urine.
How Blood in Urine Is Checked
The tests needed depend on your symptoms, age, medical history, and whether the blood is visible or microscopic.
A urologist may recommend:
- Urine tests to check for blood, infection, protein, or abnormal cells
- Blood tests to assess kidney function or related health issues
- Imaging scans to check the kidneys, ureters, and bladder
- Cystoscopy to look inside the bladder and urethra when closer bladder assessment is needed
Not every person needs every test. The aim is to find out where the bleeding is coming from and whether any treatment is needed.
Treating the Cause of Urinary Bleeding
There is no single treatment for haematuria because it is a symptom, not a diagnosis. Treatment depends on what is causing the bleeding.
A urinary tract infection may be treated with antibiotics. Stones may need medication, monitoring, or stone treatment. Prostate-related causes may need medication or further prostate assessment. If the bleeding appears to come from the bladder or urinary tract, closer evaluation may be needed.
Frequently Asked Questions
1. Is blood in urine always serious?
Not always. It can be caused by infection, stones, or other treatable conditions. However, visible, persistent, or unexplained haematuria should still be checked.
2. Should I see a doctor if I only saw blood once?
Yes, it is sensible to get checked even if it only happened once. Visible urinary bleeding may not return immediately, but the cause should still be assessed.
3. What causes blood in urine without pain?
Painless haematuria can be caused by stones, prostate issues, kidney problems, or bladder-related conditions. Some serious causes may be painless early on, so medical review is important.
4. Can a UTI cause blood in urine?
Yes. A urinary tract infection can cause blood-stained urine, often with burning, urgency, frequent urination, or lower abdominal discomfort.
5. Can kidney stones cause blood in urine?
Yes. Kidney or bladder stones can irritate the urinary tract and cause bleeding. Stones may also cause side pain, back pain, nausea, or pain when passing urine.
6. What tests are done for blood in urine?
Tests may include urine tests, blood tests, imaging scans, and sometimes cystoscopy. The exact tests depend on your symptoms, age, and risk factors.
Visible or Recurrent Urinary Bleeding Should Be Checked
Urinary bleeding may be caused by a treatable issue, such as infection or stones. It can also be a sign of a condition that needs closer attention.
If you notice visible blood when passing urine, or if urine tests repeatedly show blood, arrange an assessment to find out where it is coming from and what should be done next.
