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Serum or plasma concentration of uric acid (mass concentration)

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

This test measures the amount of uric acid, a natural substance produced when your body breaks down certain foods and substances, such as purines found in meat and seafood.

Quick summary

["Uric acid levels help assess kidney function and potential risk of gout or kidney stones."]

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

Key facts at a glance

LOINC
10028-9
Short code
R' wave dur L-V1
Synonyms
R' wave dur L-V1
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 is this test done?

Your healthcare provider may order this test to check for conditions like gout, kidney disease, or to monitor treatment for these conditions. It can also help diagnose or evaluate kidney stones, high blood pressure, or certain types of cancer.

What does a high or low result mean?

High uric acid levels may indicate overproduction of uric acid, poor kidney function, or conditions like gout. Low levels are less commonly significant unless related to specific medications or medical conditions.

How is the test performed?

A blood sample is taken from a vein, usually in your arm. The sample is sent to a lab where it is analyzed to measure uric acid concentration. The test can also be done on urine, but the blood test is more common for routine checks.

What can affect results?

Several factors can influence uric acid levels, including diet (especially foods high in purines), certain medications, dehydration, and kidney function. Recent exercise or eating certain foods like organ meats or shellfish may temporarily raise levels.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Uric Acid

Frequently asked questions

What are the normal results?
Normal ranges can vary slightly by lab and testing method, but generally, serum uric acid levels are measured in milligrams per deciliter (mg/dL). High levels may suggest conditions like gout, kidney disease, or metabolic syndrome.
How often should I get this test?
Your healthcare provider will determine how often you need this test based on your health status, symptoms, and any ongoing conditions. Regular monitoring may be recommended if you have a history of gout, kidney problems, or other related health issues.
Can I prepare for this test?
No special preparation is needed for a blood uric acid test. However, if your provider has specific instructions, such as avoiding certain foods or medications, follow them closely. For a 24-hour urine test, you may need to collect urine over a full day.
  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