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Renal Urology A

STONE Score for Uncomplicated Ureteral Stones

Predicts the likelihood of an uncomplicated ureteral stone in adults with suspected renal colic who are eligible for CT. Score 0–13.

Score interpretation

Low Probability 0–5

Ureteral stone in 8.3 % (derivation) and 9.2 % (validation) of STONE 0–5.

→ Clinical correlation required; consider alternative diagnoses. CT-KUB if clinical suspicion remains high.

Moderate Probability 6–9

Ureteral stone in 51.6 % (derivation) and 51.3 % (validation) of STONE 6–9.

→ Proceed to CT-KUB; analgesic management; urology follow-up.

High Probability 10–13

Ureteral stone in 89.6 % (derivation) and 88.6 % (validation) of STONE 10–13; acutely important alternative findings in 0.3–1.6 %.

→ Adequate analgesia (NSAIDs preferred); alpha-blocker for medical expulsion; urology review if stone >10 mm or obstructing solitary kidney.

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

References

Related

Curated clinical cross-links plus same-class fallbacks.

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