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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 purines (chemicals found in certain foods and body tissues).

Quick summary

["Uric acid levels help assess kidney function and risk for conditions like gout or kidney stones."]

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

Key facts at a glance

LOINC
10055-2
Short code
S wave dur L-V4
Synonyms
S wave dur L-V4
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 doctor may recommend this test if you have symptoms like joint pain (gout), kidney problems, or if they suspect you’re at risk for kidney stones or other metabolic disorders. It’s also used to monitor conditions like gout or kidney disease.

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 metabolic panel. Bring any medications you’re taking, as some (like certain diuretics) can affect results.

How the Test Works

A blood sample is drawn from a vein in your arm. The sample is sent to a lab, where uric acid levels are measured using a specialized chemical test (often an enzymatic method).

What the Results Mean

High uric acid levels may indicate overproduction, poor kidney function, or conditions like gout. Low levels are less common but could signal certain metabolic or genetic disorders.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Uric Acid

Frequently asked questions

What causes uric acid levels to rise?
Several factors can increase uric acid, including diet (high in purines like red meat or seafood), genetics, obesity, certain medications (e.g., low-dose aspirin), or kidney problems. Lifestyle changes like diet and exercise can sometimes help lower levels.
Can diet affect this test result?
Yes! Foods high in purines (like organ meats, shellfish, or alcohol) can raise uric acid. Avoiding these and staying hydrated may help. Always follow your doctor’s advice about diet restrictions if this test is part of a specific plan.
How often should I get this test?
Frequency depends on your health. If you have gout or kidney disease, your doctor may order it yearly or more often. Otherwise, it’s often done as needed for symptoms or monitoring.
  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