Calculators · Urology · Score

STONE score (ureteral stone)

Also called STONE score, renal colic score

Five-item emergency-department rule for the probability of an uncomplicated ureteral stone in flank pain.

Sex
Duration of pain to presentation
Race (as derived in the US cohort)
Nausea / vomiting
Haematuria on urine dipstick

Fill 5 more fields to see the result.

Formula and scoring

Sex: male 2. Timing: <6 h 3, 6–24 h 1. Origin: non-black 3. Nausea alone 1, vomiting 2. Erythrocytes on dipstick 3. Range 0–13: 0–5 low, 6–9 moderate, 10–13 high.

Exam and ward pearls

  • STONE = Sex, Timing, Origin (race), Nausea, Erythrocytes.

When not to rely on it

  • Excludes fever, infection, known renal disease, active malignancy and prior urological procedure. Derived and validated at one US centre; the race item was not designed for Indian populations.

Source

  1. Moore CL, Bomann S, Daniels B, et al. Derivation and validation of a clinical prediction rule for uncomplicated ureteral stone — the STONE score. BMJ. 2014;348:g2191. doi:10.1136/bmj.g2191 · PMID 24671981

Formula and cut-offs checked against these sources on 8 Nov 2026. Educational tool for clinicians; it does not replace clinical judgement.

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