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Serum or plasma uric acid concentration (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, including purines found in meat and seafood.

Quick summary

["Uric acid helps identify conditions like gout or kidney issues by checking for elevated levels in your blood or urine."]

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

Key facts at a glance

LOINC
9956-4
Short code
QRS dur L-V2
Synonyms
QRS dur L-V2
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 diagnose or monitor conditions such as gout, kidney disease, or high uric acid levels that could lead to kidney stones. It can also help assess how well your body is processing uric acid over time.

What to Expect Before the Test

No special preparation is usually needed. If it’s a blood test, you may fast for 8–12 hours before the draw, but always follow your provider’s instructions. For a urine test, you might collect a sample over 24 hours or provide a random sample.

What Happens During the Test?

For a blood test, a healthcare professional will draw blood from a vein in your arm. For a urine test, you’ll collect a sample in a container, either randomly or over a set period. The sample is then sent to a lab for analysis.

What Are the Possible Results?

Results are compared to a general reference range, but your specific range may vary based on lab methods and clinical context. High levels may signal kidney problems, gout, or other metabolic conditions.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

High uric acid levels can cause gout, kidney stones, or kidney damage. Low levels may indicate certain metabolic disorders or liver/kidney issues. Regular monitoring helps manage these conditions effectively.

Short name

Uric Acid

Frequently asked questions

What causes high uric acid levels?
High uric acid can result from diet (rich in purines), genetics, kidney problems, or metabolic disorders. Lifestyle factors like alcohol, obesity, or certain medications may also play a role.
What should I do if my uric acid is high?
Work with your healthcare provider to adjust diet, exercise, or medications if needed. They may recommend reducing purine-rich foods, staying hydrated, or taking medications to lower uric acid levels.
Can I prevent uric acid issues?
Yes! Limit high-purine foods, stay hydrated, maintain a healthy weight, and avoid excessive alcohol. Regular check-ups can help catch issues early.
  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