High Uric Acid: What It Means
Published Aug 2026 · Reading time: 4 minutes
The short answer:A high uric acid means your blood is holding more of this waste product than your kidneys are clearing. By itself, a mildly high number is not an emergency — most people with high uric acid have no symptoms at all. But it is a signal worth acting on, because over time it raises the odds of gout attacks and kidney stones. Most people bring it down with water, food choices, and weight, then retest in 4–6 weeks to prove it's moving.
First, what is uric acid?
Uric acid is a waste product left over when your body breaks down purines — compounds found in your own cells and in certain foods. Your kidneys filter it out through urine. When you make more than you clear, or your kidneys clear less than usual, the level in your blood climbs. At high enough levels it can form sharp crystals that settle in joints (a gout attack) or in the kidneys (stones).
Where your number sits
Ranges vary by lab and by sex — men typically run higher than women. Common reference bands:
🟢 Around 420 µmol/L (7.0 mg/dL) or below: Within the usual normal band for most men. Nothing to do.
🟡 Mildly above your lab's top limit: Very common, and usually symptom-free. Treat it as a warning light: water, food choices, retest — no panic.
🔴 Well above — e.g. 540 µmol/L (9.0 mg/dL) or rising repeatedly: Worth a proper conversation with your doctor about gout and stone risk, and about your kidney function.
Why your number might be up
- Purine-rich food. Organ meats, shellfish, sardines and other oily fish raise the raw material supply.
- Beer and spirits. Alcohol — beer especially — both adds purines and slows how fast your kidneys clear uric acid.
- Sugary drinks. Fructose-sweetened drinks raise uric acid; plain water lowers it.
- Extra weight. A strong driver — weight around the middle in particular.
- Kidneys clearing less. Dehydration, some blood-pressure medications (diuretics), and reduced kidney function all slow clearance.
- Genetics and crash dieting. Some families simply run high; fasting and crash diets can also spike the number.
Symptoms to know
Most people with a high reading feel nothing — doctors call that asymptomatic hyperuricemia. The two symptoms that change everything: a gout attack (a joint suddenly hot, red, swollen and very painful — classically the big toe, often at night) and kidney stones (severe flank or back pain, blood in urine). If you have either, see a doctor promptly rather than waiting for a retest.
Your follow-up plan
Retest in 4–6 weeks. In between, the levers that matter most: drink more water every day, cut beer and sugary drinks, ease off organ meats and shellfish, and lose a little weight if you're carrying extra. A single high reading with no symptoms usually doesn't need medicine — your doctor decides based on the level and your history. If your kidney numbers are also flagged, read them together — see our low eGFR guide and creatinine guide.
What to do next
Don't treat one flagged number as a diagnosis. Do: drink water, cut beer and sugar, retest in 4–6 weeks, and watch the number move. Most people who act at the "mildly high" stage never experience gout or stones at all.
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