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emergency-medicine urology

STONE Score (Ureteral Stone Prediction)

Predicts likelihood of ureteral stone on CT KUB in patients presenting with suspected renal colic. Helps avoid unnecessary CT in low-risk patients.

Score interpretation

Low probability of ureteral stone (<10%)

→ Ureteral stone unlikely; consider alternative diagnoses; avoid CT if clinically appropriate

Moderate probability (~51%)

→ CT KUB recommended for definitive diagnosis

High probability of ureteral stone (>89%)

→ Strong clinical diagnosis; CT KUB to confirm and guide management

Interpretation bands for the STONE Score. Apply clinical judgement and local guidance.

References

Related

Curated clinical cross-links plus same-class fallbacks.

📚 MRCEM Revision

Featured in these MRCEM clinical pathways

The STONE Score is covered in detail — with RCEM/NICE evidence base, indications and pitfalls — in the following exam-focused pathways on our sister siteReviseMRCEM.

MRCEM Primary / Intermediate / OSCE candidates: each pathway includes exam-style questions, RCEM/NICE citations, and FAQ summaries.

Decision support only — verify against a current formulary, NICE, or your local guideline before clinical use.