Uric Acid Reference Ranges for 46-Year-Olds: Sex-Specific Values & Clinical Context

Serum uric acid (SUA) reference intervals vary by lab, method, and population. Typical adult ranges:

Sex	Conventional Range (mg/dL)	SI Units (µmol/L)
Male	3.4 – 7.0	202 – 416
Female	2.4 – 6.0	143 – 357

Postmenopausal women approach male levels (estrogen lowers SUA via URAT1 inhibition).

Influencing Factors

• Diet: Purines (organ meat, shellfish, beer), fructose (↑ synthesis, ↓ excretion).
• Medications: Diuretics (↑), low-dose aspirin (↑), losartan/SGLT2i (↓), allopurinol/febuxostat (↓).
• Comorbidities: Metabolic syndrome, CKD, hypertension, psoriasis, leukemia/lymphoma (tumor lysis).
• Dehydration: Concentrates SUA.

Clinical Interpretation

• Asymptomatic hyperuricemia: Not a disease; treat if gout, stones, CKD progression risk.
• Gout diagnosis: Requires MSU crystals in synovial fluid (gold standard) or clinical criteria — not SUA alone.
• Hypouricemia (<2 mg/dL): Xanthine oxidase deficiency, renal tubular defects (Fanconi), Wilson disease, medications.

Action

If SUA outside reference: Review meds, diet, hydration, screen for comorbidities. Treat based on clinical context, not number alone.