Table 1. Testicular Workup for Ischemia and Suspected Torsion (TWIST) score system

Feature	Score
Testicular swelling	2
Hard testis	2
Absent cremasteric reflex	1
Nause/ vomitting	1
High-riding testis	1
Total	7
Low-risk	≤ 2
Intermediate-risk	3 – 4
High-risk	≥ 5