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Macro/microscopic examination of urine sediment (manual microscopic analysis)

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

This test examines the cells and particles in your urine under a microscope to help identify abnormalities like infections, kidney issues, or other conditions.

Quick summary

["A microscopic urine check can reveal hidden problems in your urinary system."]

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

Key facts at a glance

LOINC
23903-8
Short code
Monos+Macros NFr Spec Manual
Synonyms
Monos+Macros NFr Spec Manual
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
manual-count
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 This Test Is Done

Your healthcare provider may order this test if you have symptoms like frequent urination, pain while urinating, blood in urine, or unexplained weight changes. It’s also used to monitor kidney function, detect infections, or check for conditions like diabetes or kidney stones.

What to Expect During the Test

You’ll provide a urine sample, typically collected in a clean container. The sample is then examined under a microscope by a lab technician to look for cells, crystals, or other substances.

Sample Collection

Use a clean, sterile container provided by your healthcare provider. Follow instructions carefully to ensure accurate results. Avoid using toilet paper or hygiene products that might contaminate the sample.

What the Results Might Mean

Results can show red blood cells (hematuria), white blood cells (infection), crystals (kidney stones), or other particles. Abnormal findings may prompt further testing or treatment.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Urine Sediment Check

Frequently asked questions

How long does it take to get results?
Results are typically available within 1–2 business days, depending on lab processing times. Follow-up with your provider if you have questions or concerns.
What does a positive result mean?
A positive result (abnormal findings) may indicate an infection, kidney issue, or other problem. Your provider will discuss next steps based on your symptoms and test results.
Can I eat or drink before this test?
No special preparation is needed, but avoid strong-smelling foods or drinks that might affect urine clarity. Drink plenty of water to help flush your system, but avoid excessive intake before sample collection.
  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