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Catheter-Directed Urine Analysis with Cytology (Post-Drainage)

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

This test examines urine collected from a bladder catheter to check for abnormal cells, infections, or other issues after drainage. It helps assess kidney function and detect conditions like bladder cancer or urinary tract infections.

Quick summary

["This test helps doctors monitor your bladder and kidneys after catheter drainage."]

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

Key facts at a glance

LOINC
89961-7
Short code
CT Guided Kidney-L Absc drain+cath place
Synonyms
CT Guided Kidney-L Absc drain+cath place
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
ct
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

Why Is This Test Done?

Your doctor may order this test if you have a bladder catheter in place to check for signs of infection, inflammation, or abnormal cells in the urine. It can also help evaluate kidney function or rule out conditions like bladder cancer.

What Does the Test Involve?

Urine is collected directly from your bladder catheter into a sterile container. The sample is then examined under a microscope to look for cells, bacteria, or other substances that may indicate health concerns.

Sample Collection and Preparation

No special preparation is needed, but ensure your catheter is clean and functioning properly before the test. The urine sample is typically sent to the lab immediately for analysis.

What Are Common Findings?

Possible findings include the presence of white blood cells (indicating infection), red blood cells (possible bleeding), abnormal cells (suggesting cancer), or crystals (which may indicate kidney stones).

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance: This test plays a critical role in diagnosing urinary tract infections, bladder cancer, kidney disease, or other bladder-related conditions. Early detection can guide treatment decisions and improve outcomes.

Short name

Catheter urine cytology

Frequently asked questions

Will I feel any pain or discomfort during the test?
You may feel mild pressure or discomfort when urine is collected, but it is generally not painful. If you experience pain, let your healthcare provider know immediately.
How long does it take to get results?
Results are typically available within 24 to 48 hours, depending on lab processing times.
Can I drink fluids before the test?
Yes, you can drink fluids as usual unless your doctor specifies otherwise. Avoid excessive fluids that might dilute the urine sample if instructed.
  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