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White Blood Cell Clump Area Ratio (Urinary)

Published: August 9, 2026Updated: August 16, 2026

This test measures the presence and size of clumps formed by white blood cells in your urine, which may indicate inflammation or infection in your urinary tract.

Quick summary

["Clumps in urine can signal urinary tract issues; this test helps assess their presence and potential impact."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
105093-9
Short code
WBC clumps #/area UrnS
Synonyms
WBC clumps #/area UrnS
Category
chemistry
Sample
urine
Container
Sterile urine container
Units
N/A
Ref low
4.5
Ref high
11
Critical range
2 N/A – 30 N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
CPT
85004
SNOMED
900000000000003002
Specimen volume
10 mL
Stability
Room temperature: 2h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
0
Lipemia max
0
Icterus max
0
TAT
4–24 hours
Order
routine

Why This Test Is Done

Doctors may order this test if you have symptoms like frequent urination, pain during urination, cloudy or strong-smelling urine, or fever. It helps evaluate conditions such as urinary tract infections, interstitial cystitis, or other inflammatory processes in the urinary system.

What to Expect Before the Test

No special preparation is typically needed. You may be asked to provide a clean-catch urine sample, often done by urinating into a sterile container after cleaning your genital area.

What the Test Results Mean

Clumps in urine can appear due to infection (e.g., bacteria or white blood cells) or non-infectious causes (e.g., inflammation). Larger or more frequent clumps may suggest a more severe condition requiring further evaluation, such as a urinary tract infection or kidney involvement.

Possible Causes and Conditions

Common causes include urinary tract infections (UTIs), interstitial cystitis, kidney stones, or other inflammatory conditions. Clumps alone don’t confirm a diagnosis but may prompt additional testing (e.g., urine culture) for further assessment.

Reference range

Adult: 4.5-11.0 x 10^9/LN/A

Specimen: urine

No special preparation required. Stay well hydrated.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

Urinary WBC Clump Analysis

Frequently asked questions

What does it mean if I have clumps in my urine?
Clumps in urine can indicate inflammation or infection, but they aren’t definitive proof of a specific condition. If you notice persistent symptoms (e.g., pain, frequent urination, or fever), discuss your results with your healthcare provider. They may recommend further testing, such as a urine culture, to identify the underlying cause.
Can clumps in urine be caused by something other than infection?
Yes, clumps can form due to non-infectious causes like chronic inflammation, kidney disease, or certain medications. If you’re unsure about your symptoms or test results, always consult your doctor for personalized guidance.
How often should I get this test?
This test isn’t routinely recommended unless you have symptoms or risk factors for urinary issues. If you’re asymptomatic, your doctor may only order it if they suspect a specific condition (e.g., recurrent UTIs). Follow their advice for follow-up testing.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy