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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, which helps assess kidney function and identify conditions like gout or kidney stones.

Quick summary

["Uric acid levels can signal kidney issues or metabolic disorders."]

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

Key facts at a glance

LOINC
10033-9
Short code
R' wave dur L-V6
Synonyms
R' wave dur L-V6
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 doctor may order this test to check for kidney problems, such as kidney disease or failure, or to diagnose conditions like gout, where uric acid crystals form in joints. It can also help monitor treatment for conditions affecting uric acid metabolism.

What Does a High or Low Level Mean?

High levels of uric acid in the blood may indicate overproduction, poor kidney function, or conditions like gout. Low levels are less common but could suggest certain metabolic disorders or medications affecting uric acid.

How Is the Test Performed?

A blood sample is taken from a vein in your arm. The sample is sent to a lab, where it is analyzed to measure uric acid concentration using a specialized method, often enzymatic or nephelometric.

What Are Common Causes of Abnormal Results?

Factors like diet (high-purine foods), dehydration, certain medications, or underlying health conditions (e.g., diabetes, heart disease) can influence uric acid levels. Kidney problems are the most common cause of elevated levels.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical significance: Elevated uric acid is strongly linked to gout, kidney stones, and increased cardiovascular risk. Low levels may rarely indicate genetic disorders or medication effects, but further evaluation is needed if suspected.

Short name

Uric Acid

Frequently asked questions

What should I do if my uric acid test is abnormal?
If your results are outside the expected range, discuss them with your doctor. They may recommend lifestyle changes (like diet adjustments), further testing, or treatment options tailored to your condition.
How often should I get this test?
Frequency depends on your health status. Your doctor will determine if regular monitoring is needed, especially if you have a history of kidney disease, gout, or other conditions affecting uric acid.
Can I eat or drink before the test?
Typically, you may fast for 8–12 hours before the test, but follow your doctor’s instructions. Hydration is important, but avoid excessive fluids right before the draw to ensure accurate results.
  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