Pus Cells in Urine Report: What Does It Mean?
Pus cells in a urine report usually mean that white blood cells are present in urine. This is called pyuria. It most commonly happens because of a urinary tract infection, but it can also occur due to kidney stones, sample contamination, prostate infection, catheter or stent irritation, sexually transmitted infection or non-infective inflammation. A few pus cells may be normal. The report should not be treated blindly with antibiotics. Your symptoms, urine culture, bacteria, blood cells and other findings decide the next step.
Pus Cells in Urine Report: Quick Meaning
| Report/symptom pattern | What it may mean | What to do next |
|---|---|---|
| Few pus cells, no symptoms | Often normal or contamination | Repeat test only if advised |
| Pus cells + burning urination | Possible UTI | Doctor review; urine culture may be needed |
| Pus cells + fever or flank pain | Possible kidney infection | Urgent medical care |
| Pus cells + severe stone pain | Stone irritation or infected obstruction | Urologist evaluation and imaging |
| Pus cells + culture negative | Sterile pyuria | Further evaluation if persistent |
| Repeated pus cells in men | UTI, prostate, stone, stricture or obstruction | Urologist evaluation |
What are pus cells in urine?
Pus cells are usually white blood cells, also called WBCs or leukocytes. These cells are part of the body’s defence system.
When the urinary tract is infected or irritated, white blood cells may enter the urine. This can happen anywhere in the urinary system, including the kidney, ureter, bladder, prostate or urethra.
A urine routine report may mention this as:
- Pus cells
- WBCs
- Leukocytes
- Pyuria
- Leukocyte esterase positive on dipstick testing
What is the normal pus cell range in urine?
Many laboratories consider 0-5 pus cells per high-power field as normal or acceptable. However, the exact range can vary slightly between laboratories.
A practical interpretation is:
| Pus cells in urine | General meaning |
|---|---|
| 0-5/HPF | Often normal, especially without symptoms |
| 6-10/HPF | Mild increase; may be infection, irritation or contamination |
| More than 10/HPF | More significant; correlate with symptoms and culture |
| Plenty pus cells | Usually needs medical evaluation |
The number alone does not confirm infection. For example, 8-10 pus cells with burning urination may be important. But the same result in a person with no symptoms and many epithelial cells may simply mean sample contamination.
Common causes of pus cells in urine
1. Urinary tract infection
UTI is the most common cause of pus cells in urine. Symptoms may include burning while passing urine, frequent urination, urgent need to pass urine, lower abdominal pain, cloudy or foul-smelling urine, blood in urine and fever if infection is more serious. If fever, chills, vomiting or side pain are present, the infection may have reached the kidney and needs urgent evaluation.
2. Kidney stone or ureteric stone
A kidney stone can irritate the urinary passage and cause pus cells and blood cells in urine. If a stone blocks urine flow and infection is present, it can become serious. Severe side pain, pain moving from back to groin, nausea, vomiting, burning urination, blood in urine or fever with chills should not be ignored. A stone with fever is an emergency until proven otherwise.
3. Sample contamination
Sometimes the pus cells are not truly from the urinary tract. They may enter the sample during collection. This is more likely if the sample was not midstream, the container was touched from inside, there is vaginal discharge, the sample was given during periods or the report shows many epithelial cells. Your doctor may ask for a repeat clean-catch urine sample.
4. Prostate infection or inflammation in men
In men, pus cells may be due to prostatitis, which means infection or inflammation of the prostate. Symptoms may include burning urination, pelvic or perineal pain, fever, painful ejaculation, weak urine stream, difficulty passing urine or recurrent UTI. UTI in men should not be ignored, especially if it is recurrent or associated with weak flow, retention, stone or fever.
5. Urethritis or sexually transmitted infection
If pus cells are present with burning urination, urethral discharge, genital pain or recent unprotected sexual exposure, urethritis may be considered. This needs proper testing and treatment. Random antibiotics can hide the infection and make future diagnosis difficult.
6. Catheter, DJ stent or recent urology procedure
A urinary catheter, DJ stent or recent procedure can cause irritation and pus cells in urine. Sometimes infection may also be present. Get medical help if there is fever, worsening pain, foul-smelling urine, blocked catheter, no urine draining, severe burning or blood clots.
7. Sterile pyuria
Sterile pyuria means pus cells are present, but routine urine culture does not grow common bacteria. This can happen due to antibiotics taken before the urine test, kidney stones, urinary tuberculosis, sexually transmitted infections, interstitial cystitis or bladder pain syndrome, kidney inflammation, some medicines or sample contamination. Persistent sterile pyuria should be evaluated instead of taking repeated antibiotic courses.
Other urine report findings that matter
A urine report should be read as a whole. These findings help decide the cause.
| Report finding | Why it matters |
|---|---|
| Bacteria | Supports infection, especially with symptoms |
| Nitrite positive | Suggests certain bacterial infections |
| Leukocyte esterase positive | Suggests white blood cells in urine |
| RBCs/blood | Can occur with UTI, stones, prostate problems or tumors |
| Many epithelial cells | May suggest sample contamination |
| Protein | Mild protein can occur with infection; persistent protein needs kidney evaluation |
| Crystals | May be associated with concentrated urine or stone tendency |
When is urine culture needed?
Urine culture identifies the bacteria and tells which antibiotics may work. It is especially useful when infection is complicated, recurrent or not responding to treatment.
A urine culture is commonly advised if:
- Symptoms are moderate or severe.
- Fever, chills or flank pain are present.
- UTI keeps coming back.
- The patient is male.
- The patient is pregnant.
- There is diabetes, kidney disease or low immunity.
- There is a catheter, DJ stent or recent surgery.
- Symptoms continue despite antibiotics.
- There is suspected kidney infection.
- There is suspected complicated UTI.
Ideally, urine culture should be given before starting antibiotics when possible.
Should pus cells in urine be treated with antibiotics?
Not always.
Antibiotics may be needed if there are symptoms of UTI, high-risk features or culture-proven infection. But pus cells alone are not enough reason to start antibiotics.
Do not self-medicate with leftover antibiotics. Wrong antibiotics can reduce culture accuracy, cause antibiotic resistance, partially suppress infection without curing it and delay diagnosis of stones, obstruction or other causes.
Treatment should depend on symptoms, examination, urine culture and risk factors.
What should you do if your urine report shows pus cells?
If you have no symptoms
Do not panic. A few pus cells may not be serious. Your doctor may advise repeat urine routine, proper sample collection or observation. Special situations like pregnancy, upcoming urological surgery or certain high-risk conditions may need a different approach.
If you have burning, frequency or urgency
This may be UTI. Drink adequate water and consult a doctor. Urine culture may be needed, especially if symptoms are recurrent, severe or you have already taken antibiotics.
If you have fever, chills, vomiting or side pain
Seek urgent medical care. This may suggest kidney infection or an infected blocked kidney, especially if a stone is present.
If pus cells are repeatedly high
Repeated high pus cells need evaluation for recurrent UTI, stones, obstruction, prostate problems, urethral stricture, bladder issues, TB or kidney inflammation.
Emergency signs: when to seek urgent care
Do not wait at home if pus cells in urine are associated with:
- Fever with chills.
- Severe side or back pain.
- Vomiting and inability to drink fluids.
- Inability to pass urine.
- Visible blood in urine.
- Confusion, severe weakness or low blood pressure.
- Pregnancy with urinary symptoms.
- Diabetes with fever or flank pain.
- Known kidney disease or single kidney.
- Kidney stone pain with fever.
- Catheter blockage or no urine draining.
These situations may need urgent tests, IV antibiotics, imaging or drainage of urine.
How to collect urine sample properly
A poor sample can make the report misleading. For a clean urine sample:
- Wash your hands.
- Clean the genital area.
- Start passing urine first.
- Collect the middle part of urine in the sterile container.
- Do not touch the inside of the container.
- Close the lid properly.
- Submit the sample quickly to the lab.
Women should avoid giving a routine sample during periods unless urgent. Tell your doctor if there is vaginal discharge, bleeding or recent antibiotic use.
What to bring for consultation
- Urine routine/microscopy report.
- Urine culture and sensitivity report, if done.
- Ultrasound KUB or CT KUB, if done.
- Creatinine and blood sugar reports.
- Previous discharge summaries.
- List of antibiotics already taken.
- Current medicines.
- Catheter, DJ stent or surgery records, if any.
- Previous culture reports if UTI is recurrent.
FAQs
What does pus cells in urine mean?
It means white blood cells are present in urine. This can happen due to infection, stones, contamination, prostate inflammation, catheter/stent irritation or other inflammation.
Are pus cells in urine dangerous?
Not always. A few pus cells without symptoms may not be dangerous. High pus cells with fever, pain, burning, blood in urine or recurrent reports need evaluation.
Does pus cells in urine always mean UTI?
No. UTI is common, but pus cells can also occur due to stones, contamination, prostate problems, urethritis, catheter irritation, TB or kidney inflammation.
What is pyuria?
Pyuria means increased white blood cells or pus cells in urine. It is a report finding, not a final diagnosis by itself.
What does 8-10 pus cells in urine mean?
It is a mild increase. If there is burning urination or frequency, it may suggest UTI. If there are no symptoms and many epithelial cells, contamination may be possible.
What does plenty pus cells in urine mean?
It usually means many white blood cells are present. This often happens with infection or significant inflammation and should be discussed with a doctor.
Can pus cells be present but urine culture is negative?
Yes. This is called sterile pyuria. It may happen after antibiotics, with stones, urinary TB, sexually transmitted infections, kidney inflammation or contamination.
Should I take antibiotics for pus cells in urine?
Do not take antibiotics only because pus cells are present. Antibiotics should depend on symptoms, urine culture, risk factors and doctor evaluation.
Which doctor should I see?
A physician can manage many simple infections. See a urologist if you are male, have recurrent UTI, stone pain, fever, blood in urine, weak stream, urinary retention, catheter/stent issues or repeated abnormal reports.
Related reading
- Urine Culture Test Explained
- Burning Urination: Causes and When to See a Doctor
- Recurrent Urine Infection: Causes and Treatment
- Kidney Stone Symptoms and Treatment
- Blood in Urine: Causes and Evaluation
- Weak Urine Flow in Men: Causes and Treatment
- Urologist in Latur
References
- National Institute of Diabetes and Digestive and Kidney Diseases. Diagnosis of Bladder Infection in Adults https://www.niddk.nih.gov/health-information/urologic-diseases/bladder-infection-uti-in-adults/diagnosis
- European Association of Urology. EAU Guidelines on Urological Infections https://uroweb.org/guidelines/urological-infections
- Infectious Diseases Society of America. Clinical Practice Guideline for the Management of Asymptomatic Bacteriuria https://www.idsociety.org/practice-guideline/asymptomatic-bacteriuria/
- MedlinePlus. Urinalysis https://medlineplus.gov/lab-tests/urinalysis/
- MedlinePlus. Epithelial Cells in Urine https://medlineplus.gov/lab-tests/epithelial-cells-in-urine/
- MedlinePlus. Clean Catch Urine Sample https://medlineplus.gov/ency/article/007487.htm
- Urology Care Foundation. Urinary Tract Infections in Adults https://www.urologyhealth.org/urology-a-z/u/urinary-tract-infections-in-adults
- Glen P, Prashar A, Hawary A. Sterile pyuria: a practical management guide. British Journal of General Practice. 2016;66(644):e225-e227.