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Serum or plasma concentration of uric acid

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

This test measures the amount of uric acid in your blood. Uric acid is a waste product your body creates when it breaks down certain foods and substances, including purines found in meat and seafood.

Quick summary

["Uric acid helps identify conditions like gout or kidney issues."]

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

Key facts at a glance

LOINC
31899-8
Short code
MuV Ag Urth Ql
Synonyms
MuV Ag Urth Ql
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
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 Matters

Uric acid levels can indicate whether you’re at risk for gout—a painful form of arthritis—or other health problems. High levels may also signal kidney problems, where the body struggles to filter waste properly.

What to Expect Before the Test

You may be asked to fast for 8–12 hours before the test, but this isn’t always required. Bring any medications you’re taking, as some (like diuretics) can affect results. Avoid alcohol and strenuous activity 24 hours beforehand.

How the Test Works

A blood sample is drawn from a vein in your arm. The lab then analyzes the sample to measure uric acid concentration using a sensitive chemical test.

Possible Results & Interpretation

Results are reported in milligrams per deciliter (mg/dL). High levels (above typical ranges) may suggest gout, kidney disease, or other metabolic issues. Low levels are less common but could indicate certain genetic conditions.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Uric Acid Level

Frequently asked questions

What causes uric acid levels to be too high?
Several factors can raise uric acid, including diet (rich in purines), kidney problems, certain medications (like low-dose aspirin), or metabolic disorders. Lifestyle choices like alcohol consumption or obesity may also play a role.
What should I do if my uric acid is high?
If your results are elevated, your doctor may recommend lifestyle changes (like reducing purine foods, staying hydrated) or medications to lower levels. They’ll also check for underlying conditions like kidney disease or gout.
Does diet affect uric acid test results?
Yes, diet can influence uric acid. High-purine foods (red meat, shellfish) and alcohol (especially beer) may raise levels. Avoiding these for a few days before testing can help get a more accurate reading.
  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