Urinalysis with microscopic examination for cellular components (e.g., red blood cells, white blood cells, casts)
This test checks for certain cells and substances in your urine under a microscope. It helps identify signs of infection, kidney issues, or other health problems.
["Microscopic urine exams can reveal hidden problems in your urinary system or overall health."]
Key facts at a glance
- LOINC
- 17655-2
- Short code
- Deprecated S pneumB Ag Ur Ql IF
- Synonyms
- Deprecated S pneumB Ag Ur Ql IF
- Category
- coagulation
- Sample
- urine
- Container
- Sterile urine container
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- if
- 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
Your healthcare provider may order this test to investigate symptoms like frequent urination, blood in urine, pain during urination, or unexplained weight changes. It’s also used to monitor conditions like kidney disease, urinary tract infections, or diabetes.
What to Expect Before the Test
No special preparation is needed. You’ll provide a urine sample in the morning, often collected in a clean container. If you’re using medications that could affect urine color (e.g., certain antibiotics), let your provider know.
What Happens During the Test
A healthcare professional will collect your urine sample and examine it under a microscope. They’ll look for cells (like red or white blood cells), crystals, casts, or other substances that might indicate health concerns.
Possible Results and Their Meaning
Results may show normal urine (clear, no cells) or abnormal findings like extra red/white blood cells (possible infection), crystals (could indicate kidney stones), or casts (signs of kidney damage). Always discuss results with your provider.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
Microscopic urine exam
Frequently asked questions
Is this test painful or uncomfortable?
How often should I get this test?
Can I drink water before this test?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
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.
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