From the PFT test. The glass box they put you into and have you blow in a tube. They measure that and then gives the the FEV1 that you can blow out in one second. If you take that number and look it up on the Gold Standards you will see where you are on the chart.
But your doctor should tell you if you ask them.
Although my pulmonologist doesn't use the old standards anymore he prefers the new ABCD standards. Which I agree are more accurate and helpful. They grade you more on what your exacerbations and treatments are over the past year or two.
Hopefully this helps you find out.
July 30, 2025
COPD staging is determined through specific medical tests, primarily:
1. Spirometry test - measures how much air you can exhale in one second (FEV1)
2. BODE Index assessment which looks at:
- Body mass index (BMI)
- Oxygen levels
- Breathing tests
- Exercise capacity (6-minute walking test)
If your current doctor isn't Show Full Answer
COPD staging is determined through specific medical tests, primarily:
1. Spirometry test - measures how much air you can exhale in one second (FEV1)
2. BODE Index assessment which looks at:
- Body mass index (BMI)
- Oxygen levels
- Breathing tests
- Exercise capacity (6-minute walking test)
If your current doctor isn't providing clear information, consider asking for a referral to a pulmonologist who specializes in COPD care. The four COPD stages based on lung function are:
Stage 1 (Mild): About 80% of normal lung function
Stage 2 (Moderate): 50-70% of normal lung function
Stage 3 (Severe): 30-49% of normal lung function
Stage 4 (Very Severe): Less than 30% of normal lung function
Regular checkups and testing are important to monitor your disease progression and adjust treatment as needed.
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Stages of COPD
July 28, 2025