Harnsäure

Uric acid (UA) is a waste product formed from the natural breakdown of purines, which are found in certain foods and drinks. It is primarily excreted by the kidneys. The measurement of uric acid levels in the blood provides insight into the body's purine metabolism and renal function. Clinically, uric acid is significant as both elevated and reduced levels can indicate various health conditions. Hyperuricemia, defined as serum uric acid levels above 6.8 mg/dL (404 µmol/L), is associated with gout, a type of inflammatory arthritis, and may also indicate an increased risk of cardiovascular diseases and renal dysfunction. Conversely, hypouricemia, with levels below 2.0 mg/dL (119 µmol/L), can result from certain medications or underlying health issues such as liver disease or genetic disorders. In terms of athletic performance and longevity, researchers have found that lower uric acid levels are associated with exceptional longevity, as observed in centenarians. This suggests that maintaining uric acid within an optimal range could potentially contribute to a longer, healthier life. However, the relationship between uric acid and athletic performance is less clear, though it may indirectly affect performance through its role in cardiovascular health. Caveats in uric acid testing include potential confounders such as diet, medications, and renal function. Time-of-day and fasting status can also influence uric acid levels, with fasting samples typically preferred for consistency. Medications, such as diuretics and urate-lowering therapies, can significantly alter uric acid levels, necessitating careful interpretation of results.