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Insulin, Urine — Qualitative Test

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

A urine test that reports whether insulin is detectable rather than measuring a specific concentration.

Quick summary

["This test checks whether insulin is present in a urine sample."]

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

Key facts at a glance

LOINC
18234-5
Short code
Insulin Usub Ql
Synonyms
Insulin Usub Ql
Category
hormone
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Ref low
2.6
Ref high
24.9
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
CPT
83525
SNOMED
413618004
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 is this test?

This is a laboratory test that examines a urine sample to determine whether insulin can be detected. It provides a presence-or-absence result rather than a measured insulin concentration.

Why might I need this test?

Your clinician may order this test as part of an evaluation of unusually low blood sugar, abnormal insulin production, or suspected excess insulin. It is usually interpreted together with blood glucose, insulin, and other laboratory findings.

How is the test performed?

A urine sample is collected and tested in the laboratory using a method designed to detect insulin. The result generally reports whether insulin was detected or not detected.

How do I prepare for the test?

Follow your clinician's instructions for urine collection, including whether a first-morning or timed sample is required. Tell the laboratory if you are taking insulin or other medicines that could affect the result.

Reference range

Fasting: 2.6-24.9 μIU/mLN/A

Specimen: serum

No special preparation usually required. Stay well hydrated. Inform your healthcare provider of all medications and supplements you are taking.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Detectable insulin in urine may reflect insulin production by the pancreas, but the finding must be considered in the context of blood glucose and insulin test results. A result that is not detected may occur with low insulin production, low urine concentration, or collection timing. Your clinician will interpret this result alongside your symptoms, medications, and other tests.

Short name

Qualitative urine insulin

Frequently asked questions

Does this test measure how much insulin is in my urine?
No. This is a qualitative test and reports whether insulin is detected rather than providing a specific concentration.
What does a detectable result mean?
It means insulin was present in the urine sample. This alone does not diagnose a specific condition and must be interpreted with your other test results.
What should I do if the result is not detected?
Discuss the result with your clinician. The timing and concentration of the urine sample, along with your blood glucose and insulin levels, can affect interpretation.
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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