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Urine Pseudocasts, Qualitative — Microscopy

Published: August 9, 2026Updated: August 17, 2026

Microscopic examination of urine for structures that resemble casts but may be caused by mucus, fibers, or other contaminants.

Quick summary

["Pseudocasts are usually harmless structures that can look like true casts under a microscope."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 17, 2026Editorial policy

Key facts at a glance

LOINC
53976-7
Short code
Pseudocasts UrnS Ql Micro
Synonyms
Pseudocasts UrnS Ql Micro
Category
liver
Sample
urine
Container
Sterile urine container
Units
N/A
Ref low
10
Ref high
40
Critical range
— – 500 N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
microscopy-light
CPT
84484
SNOMED
302774002
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

What is this test?

This test examines urine under a microscope to look for pseudocasts, which resemble true urinary casts but may consist of mucus, fibers, or other material.

Why might I need this test?

Urine microscopy may be performed as part of a urinalysis, kidney evaluation, or investigation of urinary symptoms. Identifying pseudocasts helps distinguish them from true casts, which can be more clinically significant.

How is the test performed?

A urine sample is prepared for microscopy, and the sediment is examined for cells, crystals, casts, and other structures. The result reports whether pseudocasts are present.

How do I prepare for the test?

Collect urine in the container provided and follow the laboratory's collection instructions. A fresh, clean-catch sample is generally preferred for accurate microscopic examination.

Reference range

Adult: 10-40 U/LN/A

Specimen: urine

No special preparation required. Avoid fatty meals before the test if possible.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Pseudocasts alone are often due to mucus, fibers, or contamination and may not indicate a medical condition. Their significance depends on other urine findings, including true casts, blood, protein, or signs of urinary infection. Review the full urinalysis and clinical context with your healthcare professional.

Short name

Urine pseudocast microscopy

Frequently asked questions

Are pseudocasts the same as true urinary casts?
No. Pseudocasts may look like casts under the microscope, but they are usually formed from mucus or other material rather than substances produced within the kidney.
Does finding pseudocasts mean I have kidney disease?
Not necessarily. An isolated finding is commonly harmless, and other urine or blood test results are needed to assess kidney health.
What other findings may be reported with urine microscopy?
The laboratory may also report red or white blood cells, epithelial cells, crystals, bacteria, and true casts. These findings are interpreted together with symptoms and the rest of the urinalysis.
  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 17, 2026. · Read our editorial policy