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Taurine/Creatinine Ratio, Urine

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

A urine test that measures taurine relative to creatinine, helping assess taurine excretion and metabolism.

Quick summary

["This ratio shows how much taurine is present in the urine relative to creatinine."]

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

Key facts at a glance

LOINC
25138-9
Short code
Taurine/Creat Ur-sRto
Synonyms
Taurine/Creat Ur-sRto
Category
kidney
Sample
urine
Container
Sterile urine container
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
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 measures the amount of taurine in urine compared with the amount of creatinine. Creatinine is used as a reference because its level in urine varies with urine concentration.

Why might I need this test?

A clinician may order this test when evaluating taurine metabolism, nutritional status, or suspected metabolic disease. It may also be used alongside other tests when investigating unusual urinary excretion patterns.

How is the test performed?

A urine sample is collected and analyzed in the laboratory. The lab measures the urine taurine and creatinine levels and calculates their ratio.

How do I prepare for the test?

Follow the collection instructions provided by your healthcare professional. Depending on the test, a first-morning or timed urine sample may be requested; diet and supplement use should be discussed with your clinician.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Urine taurine/creatinine ratio

Frequently asked questions

What does the taurine/creatinine ratio measure?
It compares the amount of taurine in urine with the amount of creatinine. The result is a relative measure of urinary taurine excretion.
Is a urine sample collected for this test?
Yes. Your healthcare professional will tell you whether a spot, first-morning, or timed urine collection is needed.
Do I need to stop taking vitamins or supplements?
Do not stop prescribed medicines or supplements unless your clinician advises you to. Tell the lab about taurine-containing products, because they may affect the result.
  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