STONE score for ureteral stone
Probability of an uncomplicated ureteral stone in flank pain.
Inputs
CompleteMale sex
Duration of pain
Origin (race in the original derivation)
Nausea
Microscopic hematuria
Worked calculation
Your values are highlighted.
- Points
Origin (race in the original derivation) +3= 3
When to use
- Adults with flank pain where CT for stone is being considered.
Pearls and pitfalls
- High score: about 89% stone probability; alternative diagnoses about 1.6%.
- The original origin item uses race; consider the race-free version where available.
Why use
Can reduce CT use or support reduced-dose CT.
| Criterion | Points |
|---|---|
| Male sex | +2 |
| Duration of pain: Over 24 hours | 0 |
| 6–24 hours | +1 |
| Under 6 hours | +3 |
| Origin (race in the original derivation): Black | 0 |
| Non-Black | +3 |
| Nausea: None | 0 |
| Nausea alone | +1 |
| Vomiting | +2 |
| Microscopic hematuria | +3 |