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Serum or plasma concentration of uric acid (substance concentration)

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

This test measures the amount of uric acid in your blood, a natural substance produced when your body breaks down certain compounds, including purines found in foods and certain medications.

Quick summary

["Uric acid helps identify conditions like gout or kidney issues by monitoring your blood levels."]

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

Key facts at a glance

LOINC
10008-1
Short code
R wave dur L-V5
Synonyms
R wave dur L-V5
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
ekg
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

Why This Test Might Be Ordered

Your healthcare provider may recommend this test if you have symptoms like joint pain, kidney problems, or if they suspect conditions like gout, kidney stones, or certain metabolic disorders. It may also be used to monitor treatment progress for conditions affecting uric acid levels.

What to Expect Before the Test

No special preparation is usually needed, but you may be asked to fast for 8–12 hours before the test if it’s part of a broader metabolic evaluation. Bring any medications you’re taking to your appointment.

What Happens During the Test

A healthcare professional will draw blood from a vein in your arm. The blood sample is then sent to a lab for analysis. The test typically takes a few minutes, and you may feel slight discomfort but no lasting effects.

What the Results Mean

Results are compared to general reference ranges, but they can vary based on age, sex, and overall health. High levels may signal conditions like gout or kidney issues, while very low levels could indicate certain genetic disorders or liver/kidney problems.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Uric Acid

Frequently asked questions

Why might my uric acid levels be checked?
Your doctor may check uric acid levels to diagnose or monitor conditions like gout (a form of arthritis), kidney disease, or to evaluate how well medications are working. It can also help identify potential risks for kidney stones or other metabolic issues.
What does a high uric acid level usually indicate?
Elevated uric acid levels often point to conditions like gout, kidney problems, or metabolic syndrome. It may also suggest overproduction of purines or impaired kidney function, which can’t be directly measured in this test alone.
Can diet affect uric acid test results?
Yes, diet can influence uric acid levels. High-purine foods (like red meat, shellfish, or alcohol) may temporarily raise levels, but fasting before testing helps provide a more accurate baseline. Always follow your provider’s instructions for preparation.
  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