Additional Info:
Reference range:
Normal (unexposed population):
Non-smoker: less than 0.025 mg/L
Smoker: average 0.41 mg/L
Exposed:
Levels of less than 0.2 mg/L have been found to be non-toxic; however, levels of 0.5 to 1.0 mg/L have been associated with tachycardia and flushing.
Toxic:
Levels of 1.0 to 2.5 mg/L have been associated with obtundation, coma and respiratory depression with levels greater than 2.5 mg/L, and death with values greater than 3 mg/L.