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Neutrophil Gelatinase-Associated Lipocalin (NGAL) in Urine

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

This test measures a protein in your urine that helps doctors assess kidney function and detect early signs of kidney damage or injury.

Quick summary

["NGAL in urine can signal kidney stress, often used to monitor conditions like acute kidney injury or kidney-related illnesses."]

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

Key facts at a glance

LOINC
74099-3
Short code
NGAL Ur IA.rapid-mCnc
Synonyms
NGAL Ur IA.rapid-mCnc
Category
chemistry
Sample
urine
Container
Sterile urine container
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
ia-rapid
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 Is This Test Done?

Your doctor may order this test to check for kidney problems, especially if you have symptoms like swelling, fatigue, or changes in urine color. It can also help monitor kidney function in people with conditions like diabetes, heart disease, or after certain treatments.

What Does the Test Involve?

You’ll provide a urine sample, typically collected in the morning. The sample is tested for the presence of NGAL protein, which is released by kidney cells when they’re stressed or damaged.

What Are Common Uses?

NGAL in urine is often used alongside other tests to help diagnose or track kidney injury, especially in situations like severe infections, dehydration, or after surgery.

How Is the Test Performed?

The test is quick and painless. You’ll likely urinate into a clean container, and the sample is sent to a lab for analysis. Results are usually available within a few hours or days, depending on lab processes.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Urine NGAL

Frequently asked questions

How soon can I expect results from this test?
Results are typically available within 24 to 48 hours, depending on your lab’s processing schedule. Your doctor will contact you once they have the results.
What does a high or low NGAL level mean?
A high level of NGAL in urine often suggests kidney stress or damage, while low levels may indicate normal kidney function or less severe kidney involvement. Your doctor will interpret results in the context of your overall health and symptoms.
Can I eat or drink anything before this test?
You can eat and drink normally before this test unless your doctor specifies otherwise. Avoiding certain medications or foods may not be necessary unless instructed.
  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