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Serum or plasma concentration of uric acid (measured by nephelometry)

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

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

Quick summary

["Uric acid levels help diagnose and monitor conditions like gout or kidney function."]

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

Key facts at a glance

LOINC
10046-1
Short code
S wave dur L-AVF
Synonyms
S wave dur L-AVF
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 Is Done

Your healthcare provider may order this test to check for high uric acid levels, which can cause gout or kidney stones. It may also be used to evaluate kidney function or monitor certain diseases, like diabetes or heart conditions.

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 your provider specifies it. Bring any medications you’re currently taking.

How the Test Is Done

A healthcare professional will draw blood from a vein in your arm using a small needle. You may feel a slight sting, but it usually doesn’t cause pain. The blood is then sent to a lab for analysis.

What the Results Mean

High uric acid levels may indicate conditions like gout, kidney disease, or metabolic disorders. Low levels might suggest certain genetic or liver issues, though this is less common. Your results will be compared to general reference ranges provided by your lab.

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 be too high?
High uric acid can result from diet (e.g., high-purine foods like red meat or shellfish), kidney issues, genetics, or certain medications. Lifestyle factors like obesity or alcohol consumption may also play a role.
How long does it take to get results?
Results are typically available within 1–3 business days, depending on your lab’s processing time. Your provider will discuss them with you during your follow-up visit.
Can I eat or drink before this test?
Follow your provider’s instructions—some tests require fasting, while others don’t. If unsure, ask your lab or provider about specific guidelines for uric acid testing.
  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