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Urine Oxalate (Mass Concentration)

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

This test measures the amount of oxalate, a chemical compound, in your urine. Oxalate is a byproduct of metabolism and can be linked to certain health conditions.

Quick summary

["Urine oxalate levels may help identify or monitor conditions affecting kidney stones or metabolic processes."]

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

Key facts at a glance

LOINC
12792-8
Short code
Oxalate sp4 p chal Ur-mCnc
Synonyms
Oxalate sp4 p chal Ur-mCnc
Category
chemistry
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

Why Is This Test Done?

Your healthcare provider may order this test if you have symptoms like kidney stones, recurrent urinary tract infections, or if you have a family history of conditions like primary hyperoxaluria. It may also be used to monitor treatment for conditions affecting oxalate metabolism.

What Does the Test Involve?

You’ll collect a sample of your urine in a clean container, typically over a 24-hour period. The sample is then sent to a lab for analysis using a specialized method to measure oxalate levels.

What Are Possible Results?

Results are reported as the mass concentration of oxalate in your urine. There are no standard reference ranges provided here, as they can vary by lab and individual health status. Your results will be interpreted by your healthcare provider in the context of your overall health.

What Does It Mean If My Results Are Abnormal?

High urine oxalate levels may suggest conditions like kidney stones, metabolic disorders, or certain dietary factors. Low levels might indicate other metabolic or health-related factors that require further evaluation by your healthcare provider.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Urine Oxalate

Frequently asked questions

How often will I need this test?
The frequency of this test depends on your medical condition and treatment plan. Your healthcare provider will determine how often you need to be tested, whether it’s once or multiple times a year.
Can I eat or drink anything before the test?
For a standard 24-hour urine collection, you may need to follow specific dietary restrictions or timing guidelines provided by your healthcare provider. Generally, avoid certain foods or drinks that might interfere with the test results, such as those high in oxalates.
What should I do if I miss my urine collection period?
If you miss any part of the 24-hour urine collection, inform your healthcare provider immediately. They may need to adjust your test protocol or retest to ensure accurate results.
  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