Technology
Breath Analysis Advantage
Non-Invasive
Unlimited repeat Testing
Cost
Potential risk
Blood
no
No
High
- Elderly people difficult to draw blood
- Vasovagal response (3%)
- Logistics
X-ray /CT scan
no
no
High
- Ionizing radiation exposure
- Cancer risk
- Expensive
Breath Analysis
Yes
Yes
Low
Completely non invasive
Unlimited repeat testing
Low cost
Point-of-care
English 
Chinese