What serum urate target reduces gout flares?

Serum urate <360 µmol/L (6 mg/dL) is the primary target; <300 µmol/L (5 mg/dL) recommended for tophaceous gout to accelerate crystal dissolution; <360 µmol/L is below the saturation point reducing MSU crystal formation.

How is allopurinol dosed to minimize hypersensitivity risk?

Start allopurinol 50-100 mg/day, increase by 50-100 mg every 2-4 weeks until urate target achieved; maximum 900 mg/day; HLA-B*5801 testing recommended in Han Chinese, Korean, Thai, and African-American patients before starting.

What is the role of colchicine prophylaxis during ULT initiation?

Colchicine 0.5-1 mg/day for 6 months during ULT initiation prevents mobilization flares from crystal dissolution; NSAIDs are alternative prophylaxis; anti-IL-1 (anakinra, canakinumab) for prophylaxis-refractory cases.

What allopurinol dose is safe in CKD?

Allopurinol starting dose 50 mg/day in CKD 3-4; traditional conservative dosing (CrCl-based) may be too restrictive; can increase to achieve urate target with careful monitoring for hypersensitivity; febuxostat preferred in CKD 3b+.

When is pegloticase indicated for gout?

Pegloticase (uricase) rapidly dissolves tophi; indicated for severe tophaceous gout refractory to maximum ULT; infliximab co-administration reduces immunogenicity; anti-pegloticase antibodies cause treatment failure in 40%.

Gout Serum Urate Target and Flare Risk Calculator

Calculates serum urate flare risk at different urate levels, allopurinol/febuxostat dose titration schedule to achieve <360 µmol/L target, and renal dose adjustment for urate-lowering therapy.

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Frequently Asked Questions

What serum urate target reduces gout flares?

How is allopurinol dosed to minimize hypersensitivity risk?

What is the role of colchicine prophylaxis during ULT initiation?

What allopurinol dose is safe in CKD?

When is pegloticase indicated for gout?