Skip to content

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

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

This test examines the cells and particles found in your urine under a microscope. It helps identify signs of infection, kidney issues, or other health problems.

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
71639-9
Short code
Monos+Macros NFr.DF Fld Manual
Synonyms
Monos+Macros NFr.DF Fld 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

What Does This Test Measure?

Your urine sample is placed on a microscope slide and examined for various components, including red blood cells, white blood cells, bacteria, crystals, casts, and other particles. These can indicate conditions like urinary tract infections, kidney disease, or metabolic disorders.

Why Is This Test Done?

Doctors may order this test to diagnose or monitor conditions such as kidney disease, urinary tract infections, bladder stones, or to check for signs of systemic diseases like diabetes or lupus.

How Is the Sample Collected?

You will collect a midstream urine sample in a clean container. The sample is then sent to the lab for microscopic analysis. No special preparation is needed, but avoid using soaps or perfumes before collecting the sample.

What Are Common Findings?

Common findings include red blood cells (which may suggest bleeding in the urinary tract or kidney), white blood cells (indicating infection), bacteria (sign of UTI), crystals (linked to kidney stones), or casts (signs of kidney disease).

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Urine Sediment Microscopy

Frequently asked questions

How long does it take to get results from this test?
Results are typically available within 1 to 2 business days, depending on lab processing times.
What does it mean if I have red blood cells in my urine?
Red blood cells in urine can indicate urinary tract bleeding, kidney damage, or other conditions. Your doctor will discuss the findings with you and may recommend additional tests if needed.
Can I drink water before this test?
Yes, you can drink water as usual before this test, but avoid excessive hydration just before collecting the sample to ensure a representative urine sample.
  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