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Pyruvate and Creatinine, Urine or Stool

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

Measures pyruvate and creatinine in a urine or stool sample to help evaluate metabolism and interpret the pyruvate result.

Quick summary

["This test measures pyruvate alongside creatinine in urine or stool to help assess metabolic abnormalities."]

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

Key facts at a glance

LOINC
25132-2
Short code
Pyruvate/Creat Ur-sRto
Synonyms
Pyruvate/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 pyruvate and creatinine in a urine or stool sample. Pyruvate is involved in cellular energy metabolism, while creatinine is measured as a comparison value that may help the laboratory interpret the pyruvate result.

Why might I need this test?

A clinician may order this test when symptoms suggest an inherited or acquired problem with metabolism. The results may help evaluate unusual patterns of fatigue, muscle weakness, poor growth, digestive symptoms, or episodes of low blood sugar.

How is the test performed?

A urine or stool sample is collected as instructed by the healthcare provider or laboratory. The laboratory analyzes the sample and may report the two measurements separately or calculate a comparison, depending on the test method.

How do I prepare for the test?

Follow the collection instructions provided with the test order, including the type and amount of urine or stool sample required. Tell the laboratory if you are taking medicines or supplements, because they may affect the results.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Pyruvate and Creatinine, Urine or Stool

Frequently asked questions

What does the pyruvate result mean?
Pyruvate is a substance formed as the body processes carbohydrates for energy. An unusual result may point to a metabolic or mitochondrial condition, but it must be interpreted with symptoms and other laboratory findings.
Why are pyruvate and creatinine measured together?
Creatinine provides a comparison measurement that can help the laboratory evaluate the pyruvate result. The exact calculation depends on the specimen and laboratory method.
Do I need to fast for this test?
Fasting requirements vary and are not specified by the test abbreviation alone. Follow the instructions from your clinician or laboratory, and ask if you are unsure whether food or drinks should be avoided.
  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