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Yeast, Urine — Microscopy, Count per Low-Power Field

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

A urine microscopy test that detects and estimates the amount of yeast seen in a urine sample.

Quick summary

["Yeast in urine may reflect colonization or contamination, so results should be interpreted with urinary symptoms and other findings."]

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

Key facts at a glance

LOINC
41215-5
Short code
Yeast #/area UrnS LPF
Synonyms
Yeast #/area UrnS LPF
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-lpf
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 a urine sample under a microscope to look for yeast cells. The laboratory may report the amount seen per microscopic field or as another semi-quantitative measurement.

Why might I need this test?

It may be ordered during evaluation of urinary burning, urgency, frequency, cloudy urine, or irritation. It can also be included as part of a routine urinalysis or when a urine infection is suspected.

How is the test performed?

A urine specimen is collected and examined microscopically. The laboratory looks for yeast and estimates how much is present, often using low-power fields to review the sample.

How do I prepare for the test?

Follow your clinician's collection instructions, which may include a clean-catch midstream urine sample. A first-morning sample may be requested. Good hand hygiene and avoiding contamination of the container help obtain a reliable result.

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.

◆Associated findings1

Short name

Urine yeast microscopy

Frequently asked questions

Does yeast in urine always mean I have a yeast infection?
No. Yeast can be present as part of normal genital flora or can contaminate the urine during collection. Clinical significance depends on symptoms and other urine findings.
What symptoms can occur with a yeast-related urinary infection?
Possible symptoms include burning with urination, frequent or urgent urination, lower abdominal discomfort, and cloudy urine. Some people have no symptoms.
Is a urine culture needed if yeast is found?
A culture may be helpful when infection is suspected, if symptoms persist, or if treatment is being considered. The clinician can decide whether culture or susceptibility testing is needed.
  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