Hi Lazy T and thanks for your posted inquiry. Although we are unable to provide medical advice or diagnostics over the internet (for your own safety), your concern certainly warrants a comment. In the most general of terms, the symptoms of COPD are treated the same, regardless of the etiology.
The testing (for alpha-1 antitrypsin deficiency) is just that, to determine if the person being tested has a genetic predisposition for the disease.
I hope this brief reply provides some insight for your question.
Should you want to read more about COPD, genetics and treatment, you may want to look over any of these articles.
COPD and genetics: https://copd.net/basics/causes-risk-factors/genetics/
Explaining Emphysema: https://copd.net/clinical/explaining-emphysema-risk-symptoms/
Research - COPD and genetics: https://copd.net/living/genetics-what-researchers-are-learning/
I do hope you find the material to be helpful.
All the best,
Leon (site moderator)