Biomarker · Kidney
Uric acid
Uric acid is a waste product from breaking down purines. Learn what a uric acid test measures and its link with gout and kidney stones.
Written by LON6EVITY Editorial Team · Last updated
Overview
Uric acid forms when the body breaks down purines, found in body cells and in foods such as red meat, some seafood and alcohol. It is normally removed by the kidneys.
Why it matters
High levels can lead to crystals forming in joints (gout) or kidney stones. MedlinePlus notes the test is used to help diagnose gout and monitor people at risk of high uric acid, for example during some cancer treatments.
Higher and lower results
High uric acid does not always cause symptoms. It can relate to diet, alcohol, kidney function, some medications and genetics. Low levels are uncommon and rarely a concern.
How the test is performed
A blood sample or a 24-hour urine collection.
Reference ranges
Reference ranges and targets differ between laboratories, units and guidelines, and depend on age, sex, method and your overall clinical picture. A single result is not a diagnosis — interpret it with a qualified clinician.
Factors that can affect the result
- Purine-rich foods
- Alcohol
- Kidney function
- Diuretics
- Dehydration
Questions people commonly ask
- Does high uric acid mean I have gout?
- No. Many people with high uric acid never develop gout; diagnosis depends on symptoms and clinical assessment.
Related biomarkers
Related topics
Understand your biomarkers in context
What does this mean for your own health data? Log your results, follow trends over time and bring an organised summary to your next doctor's appointment.
Sources
- Uric Acid Test. MedlinePlus, U.S. National Library of Medicine.