Nonsmoker: <2%; Smoker: <9%; Toxic: >15%
Critical Levels: >20%
. Lavender-top tube.
■ Used to evaluate patients exposed to smoke, fumes, and fires.
■ Levels >20% cause dizziness and headache; >30%,
tachycardia, hypotension, and confusion; >60%, coma and
death.
