(c) 2004 by ALBERT DONNAY
All CO-Related Disorders Share Biomarker:
Elevated Level of CO in End-Tidal Breath
(maximum after holding breath 20 to 25 seconds)
Healthy Relaxed Non-Smokers
= 0-2 ppm
Mildly Elevated bCO
Borderline Abnormal for Non-Smokers
= 3-4 ppm
Moderately Elevated bCO
Smokers and People with CO Disorders
= 5-24 ppm
Highly Elevated bCO
Recently Smoked or CO Poisoned
All healthy adults have approx. noon peak and midnight trough.
Higher after supplemental oxygen & if standing vs. sitting vs. supine.