Guy’s Stone Score (PCNL Complexity)
Guy’s Stone Score (PCNL Complexity) - a deterministic tool in Sophie Well's Clinical Scoring & Risk group.
Open the Guy’s Stone Score (PCNL Complexity) → Runs in your browser. No signup, no tracking.
What this is
Guy’s Stone Score (PCNL Complexity) is one of 230 deterministic tools in Sophie Well's Clinical Scoring & Risk group. Guy’s Stone Score (PCNL Complexity) - a deterministic tool in Sophie Well's Clinical Scoring & Risk group.
When to use it
Use this tool when you need a quick, citable reference. Every calculation runs entirely in your browser - no inputs leave your device, no account is required, no AI is involved. The site enforces a strict Content Security Policy and ships no analytics or third-party CDN.
References
Thomas K, Smith NC, Hegarty N, Glass JM. The Guy's stone score — grading the complexity of percutaneous nephrolithotomy procedures. Urology. 2011;78(2):277-281. Read the source ↗
Worked example: Guy's stone score Grade IV — expected stone-free rate ~29% (staghorn calculus, or any stone with spina bifida / spinal injury).
Sophie Well is a reference and educational tool. Not medical, legal, or financial advice. Does not replace clinician judgment, professional billing review, or legal counsel.