[csears]

Thanks for the extra details here. I can see how challenging it would be to know with a high degree of certainty that a drug was truly safe just using test strips. But it seems like the test strips are a practical, relatively low cost option that, while not perfect, could improve the status quo.

Test strips aren't the only option that I'm investigating. I know there are some facilities that will do lab tests to check for fentanyl and other dangerous additives. That might end up being a better approach.

I have family and friends with pharmaceutical industry, chemistry, and medical/healthcare backgrounds that I've reached out to for advice on the issue, especially the question of weather it's possible to safely use the test strips with a low risk of some kind of exposure.