Is co2 blood level 33 high?

BREATH HOLDING . CO2 levels are often elevated if you get anxious and hold your breath during the lab draw. If the other tests are normal, get it rechecked . While they are drawing blood focus on relaxing and taking slow deep breaths.
A little. The usual values are less than 30, so this is a little high. There can be several causes of this that include respiratory problems and metabolic problems.