Serum Uric Acid

Overview and Clinical Significance

Serum uric acid is a metabolic byproduct of purine breakdown, primarily excreted by the kidneys. It plays a role in antioxidant defense, metabolic regulation, and disease risk assessment.

Clinical Significance

  • Gout & Arthritis: Elevated uric acid levels can lead to gout, a painful inflammatory arthritis caused by urate crystal deposition in joints.
  • Kidney Function & Urolithiasis: High uric acid concentrations may contribute to kidney stones, impairing renal function.
  • Cardiovascular & Metabolic Health: Hyperuricemia is associated with hypertension, diabetes, and metabolic syndrome, influencing cardiovascular risk.
  • Neurological & Cognitive Effects: Some studies suggest a link between uric acid levels and neurodegenerative diseases, though findings remain inconclusive.
  • Diagnostic & Therapeutic Applications: Serum uric acid testing helps assess gout risk, kidney health, and metabolic disorders.

Serum uric acid is a key biomarker of metabolic and renal health, influencing disease progression, inflammation, and oxidative balance.

Increasing +

Decreasing -

Increased Uric Acid

  • Gout – Elevated uric acid is closely associated with gouty arthritis, where deposition of monosodium urate crystals causes joint inflammation.
  • Metabolic Syndrome and Cardiovascular Disease – Hyperuricemia is often seen in patients with insulin resistance, obesity, or hypertension.
  • Renal Impairment – Reduced kidney function can lead to higher uric acid levels.
  • Cell Turnover – Conditions with high cell turnover (e.g., hemolytic anemias, certain cancers) can elevate uric acid.
  • Certain Medications - Diuretics and chemotherapy drugs may increase uric acid levels.

Decreased Uric Acid

  • Dietary Insufficiency – Low purine intake or malnutrition might lower uric acid, though this is less clinically concerning.
  • Genetic Conditions or Medications – Rarely, certain enzyme deficiencies or uricosuric drugs can decrease levels.

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Related

Age-Related Considerations for Uric Acid

  • Young Adults – Elevated uric acid may set the stage for early-onset gout.
  • Older Adults – Chronic hyperuricemia can exacerbate kidney and cardiovascular issues.

All Markers