Pus Cells in Urine: Normal Range, What do the Levels Indicate

Overview

• Pus cells in urine are white blood cells that may indicate urinary tract inflammation or infection.
• A commonly used reference range is 0–5 white blood cells per high-power field (HPF), though ranges may vary by laboratory.
• UTIs commonly increase pus cells, but kidney stones, sample contamination, and other conditions can also contribute.
• Urine routine and microscopy can detect pus cells, while a urine culture can help identify bacterial growth when indicated.
• Treatment depends on the underlying cause and does not always require antibiotics.
• Fever with side or back pain, persistent vomiting or feeling severely unwell requires prompt medical assessment.

If your urine report shows an increased count, you may wonder what it means and whether you need treatment. Pus cells in urine means that white blood cells have been detected in the urine, which may indicate inflammation or infection. However, a high pus cell count does not always mean you have an infection. Understanding the result, your symptoms and other urine test findings helps determine whether further testing or treatment is needed.

What Are Pus Cells in Urine?

Pus cells in urine are white blood cells that may be present when the urinary tract responds to infection or inflammation. An increased number of these cells is called pyuria.

White blood cells help the immune system respond to harmful microorganisms and other inflammatory triggers. When a urine sample contains more white blood cells than expected, this finding may indicate a UTI, kidney infection, urinary stones, or other conditions.

However, pyuria alone cannot confirm a UTI. Doctors interpret the result alongside symptoms, other urine findings, medical history and, when necessary, a urine culture.

It is also important to distinguish pyuria from bacteriuria. Pyuria means increased white blood cells, whereas bacteriuria means bacteria are present in the urine. The two findings may occur together, but they are not the same.

Also read: 

https://redcliffelabs.com/myhealth/health/urinary-tract-infection-symptoms-causes-and-treatment

Symptoms of Increased Pus Cells in Urine

When pus cells in urine are high, you may experience:

• Burning sensation when you urinate
• Increased frequency of urination
• Cloudy urine that may have a bad smell
• Pain in the lower abdomen. 
• Fever (in case of severe infections)
• Blood in urine (haematuria)
• Fatigue or weakness 

Causes for Pus Cells in the Urine: 

Several conditions can cause increased white blood cells in urine. A UTI is a common cause, but it is not the only possibility.

1. Urinary Tract Infection (UTI)

A UTI occurs when microorganisms, usually bacteria, infect the urinary tract. Symptoms may include burning during urination, frequent urination, urgency and lower abdominal discomfort. Pus cells may support a suspected UTI but do not confirm it.

2. Kidney Infection

A kidney infection (pyelonephritis) may increase pus cells in the urine. Symptoms include fever, chills, side or back pain, nausea and vomiting. These symptoms require prompt medical assessment.

3. Kidney or Bladder Stones

Urinary stones can irritate the urinary tract and cause increased pus cells. Other symptoms may include sharp side or back pain, blood in the urine, and difficulty passing urine.

4. Sexually Transmitted Infections (STIs)

Infections such as chlamydia and gonorrhoea may cause urinary inflammation and increased pus cells. Symptoms can include painful urination, unusual discharge or pelvic discomfort. Specific testing may be needed to identify the infection.

5. Contamination During Urine Sample Collection

Improper urine sample collection may introduce white blood cells from the surrounding skin or genital secretions. If contamination is suspected, a doctor may recommend repeating the test with a properly collected sample.

6. Sterile Pyuria

Sterile pyuria means increased white blood cells in urine despite no bacterial growth in a routine urine culture. Possible causes include recent antibiotic use, STIs, urinary stones and certain infections or inflammatory conditions. Persistent findings may require further evaluation.

7. Other Less Common Causes

Certain medicines, kidney inflammation and uncommon infections, such as urinary tuberculosis, may cause pyuria. Doctors consider these conditions based on symptoms, medical history, and other test results.

An elevated count does not always confirm a urinary tract infection. Identifying the underlying cause helps determine the appropriate treatment.

How Are High Pus Cells in Urine Diagnosed?

Pus cells are usually detected through a urinalysis. Depending on the symptoms and initial findings, additional tests may be recommended.

1. Urine Routine and Microscopy

A urine routine and microscopy test examines a sample for various findings, including white blood cells, red blood cells, bacteria, epithelial cells, and crystals. Other parts of the test may assess characteristics such as urine appearance, pH, specific gravity, protein, glucose and nitrites, depending on the laboratory's test panel.

2. Urine Culture

A urine culture checks whether microorganisms grow from the urine sample. When a bacterial infection is suspected, it can identify the responsible bacteria and, when available, guide antibiotic selection through susceptibility testing.

3. Additional Investigations

If the finding persists or the symptoms do not improve, a doctor may recommend additional tests based on the suspected cause. These may include targeted testing for sexually transmitted infections, kidney function tests or imaging when urinary stones or other structural problems are suspected.

The need for further testing depends on the individual’s clinical history and initial findings.

Normal Range of Pus Cells in Urine

However, the laboratory's own reference range and reporting method should be considered when interpreting the result.

A result above the reference range may indicate inflammation or infection, but the count alone cannot establish the diagnosis.

Pus Cells in Urine: Result Interpretation

0–5	Commonly within the reference range
6–10	May be above the reference range and needs interpretation in context
More than 10	May indicate pyuria and warrant assessment alongside symptoms and other findings

What Does an Elevated Count Indicate?

An increased pus cell count may be associated with:

• Urinary tract infection (UTI): Infection affecting the bladder or other parts of the urinary tract.
• Kidney infection: An infection that may cause fever, chills, side or back pain, nausea or vomiting.
• Urinary stones: Stones may irritate the urinary tract lining and cause inflammation..
• Sample contamination: White blood cells from outside the urinary tract may enter the sample during collection.
• Other conditions: Certain sexually transmitted infections, inflammatory conditions and less common urinary tract disorders may also cause pyuria.

The appropriate next step depends on the overall report and whether symptoms are present.

 

How Age and Pregnancy Affect Interpretation 

The significance of high pus cells in urine depends on a person's age, symptoms and health condition. Increased pus cells may indicate a urinary tract infection or inflammation.

In Adults

A urine result showing 5 or more pus cells per high-power field (HPF) may indicate pyuria, an increased number of white blood cells in the urine. This can occur with a UTI, kidney infection, urinary stones, or other conditions.

In Children

High pus cells may indicate a UTI, especially when accompanied by fever, painful urination or vomiting. A doctor may recommend a urine culture to confirm the infection and guide treatment.

During Pregnancy

High pus cells may indicate a UTI, but they do not confirm an infection. A urine culture helps detect bacteria and determine whether treatment is needed. Fever, painful urination or side or back pain requires prompt medical assessment.

Also read: 

https://redcliffelabs.com/myhealth/urology-2/reduce-pus-cells-in-urine-naturally-causes-symptoms-home-remedies 

 

How Are High Pus Cells in Urine Treated?

Treatment depends on the underlying cause of increased pus cells in urine. A doctor may recommend:

• Antibiotics: For bacterial infections when treatment is needed.
• Further testing: A urine culture to identify bacteria and guide treatment.
• Treating the underlying cause: Specific treatment for urinary stones or other conditions.
• Adequate fluid intake: Maintain hydration based on individual needs.
• Repeat urine testing: When needed to confirm findings or monitor the condition.

Do not take antibiotics solely because of a high pus cell count. Follow your doctor's advice.

 

How to Collect a Urine Sample Correctly

Proper sample collection reduces contamination and improves the reliability of urine test results.

Follow the laboratory's instructions. General guidance for a clean-catch midstream sample includes:

1. Wash your hands before collecting the sample.
2. Follow the laboratory's instructions for cleaning the genital area.
3. Begin urinating into the toilet.
4. Collect the middle portion of the urine stream in a sterile container without touching its inside.
5. Close the container securely and deliver it to the laboratory within the recommended time. Follow any storage instructions provided by the laboratory.

Tell your doctor if you are menstruating, have recently taken antibiotics or have difficulty providing a sample, as these details may affect how the result is interpreted.

If contamination is suspected, the doctor may recommend repeating the urine test.

Also read: 

https://redcliffelabs.com/myhealth/general-health/importance-of-regular-sexually-transmitted-diseases-testing-protecting-your-health-and-your-partners/ 

Other diseases and pus cells in urine

Certain infections apart from UTIs cause pus cells to appear in the urine. This includes tuberculosis, autoimmune diseases, kidney diseases, etc.

When Should You Consult a Doctor?

Consult a doctor if: 

• Pus cells remain above the normal range (often more than 5/HPF, depending on the laboratory).
• You experience burning during urination, pelvic discomfort or foul-smelling urine.
• Symptoms persist despite treatment, as further testing may be needed.
• You have recurrent urinary tract infections (UTIs).
• You are pregnant and have urinary symptoms or concerns about your urine test results.
• You notice blood in your urine or severe back or side pain.

Seek prompt medical attention if you have fever with chills, side or back pain, persistent vomiting or difficulty passing urine, as these may indicate a serious infection or another condition requiring urgent treatment.

Conclusion

High pus cells in urine can occur for several reasons, including urinary tract infections, stones, or sample contamination. The next step depends on your symptoms and test results. If the count stays elevated or you have urinary discomfort, see a doctor to determine the cause. Appropriate testing can help guide treatment and prevent unnecessary medication.

FAQs 

1. Can pus cells be present in urine without symptoms?

Yes, pus cells may be present even without urinary symptoms. Possible reasons include sample contamination, inflammation or an underlying urinary condition. A doctor may review your medical history and other urine findings to decide whether you need further testing or treatment.

2. Can dehydration cause pus cells in urine?

Dehydration is not a common direct cause of increased pus cells in urine. Although it can concentrate urine, it does not explain persistent pyuria. If your report shows high pus cells, consult a doctor to identify the cause rather than relying on increased water intake alone.

3. Can pus cells in urine affect kidney function?

Pus cells themselves do not usually damage the kidneys. However, the underlying cause, such as a kidney infection or urinary obstruction, may affect kidney health if not treated appropriately. Seek medical advice if high pus cells occur alongside fever, side or back pain, or difficulty passing urine.

4. What does it mean if there are a lot of pus cells in your urine?

A high pus cell count in urine may indicate an infection or inflammation in the urinary tract. Possible causes include urinary tract infections (UTIs), kidney infections, urinary stones and other conditions. A doctor may recommend a urine culture or additional tests to identify the underlying cause.

5. Is the presence of pus cells in urine always a sign of infection?

No, pus cells in urine do not always indicate an infection. They may also occur due to urinary stones, inflammation or contamination during sample collection. A doctor interprets the result alongside symptoms, other urine findings and, when necessary, urine culture results to determine the likely cause.

6. Can pus cells in urine go away on their own?

Pus cells in urine may decrease when a temporary cause resolves, but this depends on the underlying condition. Do not automatically attribute increased pus cells to dehydration or assume they will resolve without treatment. If the count remains elevated or symptoms develop, consult a doctor for appropriate evaluation.