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Lactate and Creatinine — Mass Measurement, Turbidimetric Method

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

Measures lactate and creatinine in a laboratory sample. Lactate reflects cellular energy metabolism, while creatinine is commonly used to assess kidney filtration.

Quick summary

["These results can help evaluate oxygen delivery to tissues and kidney function when interpreted with your overall health."]

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

Key facts at a glance

LOINC
108484-7
Short code
Lactate/Creat Msmt Ur
Synonyms
Lactate/Creat Msmt Ur
Category
kidney
Sample
urine
Container
Sterile urine container
Units
N/A
Critical range
— – 4 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 laboratory test measures lactate and creatinine in a specimen. Lactate is a substance produced as cells use energy, while creatinine is a muscle breakdown product that is filtered by the kidneys.

Why might I need this test?

Lactate may be measured when there is concern about low blood flow, oxygen deprivation, severe illness, or another condition affecting metabolism. Creatinine is commonly checked to evaluate kidney function or monitor people with known kidney disease.

How is the test performed?

A laboratory specimen is analyzed for lactate and creatinine. The method code indicates a mass measurement and suggests turbidimetry, a method commonly used to measure creatinine by detecting how much light passes through the reacted sample.

How do I prepare for the test?

Preparation depends on the specimen ordered by your clinician. For a blood test, avoid strenuous exercise immediately beforehand if instructed and tell your clinician about relevant medications; for a urine test, collect the sample using the timing and container provided.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Lactate and Creatinine

Frequently asked questions

What does a high lactate level mean?
A high lactate level can reflect reduced oxygen delivery or increased energy demand, but exercise, medications, and other conditions may also raise it. The result must be interpreted in your clinical context.
Why are lactate and creatinine tested together?
They provide information about different body processes. Lactate relates mainly to cellular energy metabolism, while creatinine is commonly used to help evaluate kidney filtration.
Do I need to fast for this test?
Fasting requirements depend on the specimen and the laboratory's instructions. Follow the preparation provided with your test order and ask your clinician if you are unsure.
  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