Table 1. Canadian Triage and Acuity Scale (CTAS) guideline.

CTAS level	Acuity/Severity	Color	Time
1	Resuscitation	Blue	Patients need to be seen by a physician immediately 98% of the time
2	Emergent	Red	Patients need to be seen by a physician within 15 minutes 95% of the time
3	Urgent	Yellow	Patients need to be seen by a physician within 30 minutes 90% of the time
4	Less urgent (semi-urgent)	Green	Patients need to be seen by a physician within 60 minutes 85% of the time
5	Non-urgent	White	Patients need to be seen by a physician within 120 minutes 80% of the time