I was watching this video earlier tonight: https://youtu.be/Vat-PKdQ13A?t=30 https://youtu.be/Vat-PKdQ13A?t=30 That looked like some really sloppy lab techniq

I was watching this video earlier tonight: https://youtu.be/Vat-PKdQ13A?t=30 https://youtu.be/Vat-PKdQ13A?t=30 That looked like some really sloppy lab technique, and I hope that's not how it is really done in practice. If real tests are done by hand like this, with distractions, open air, and no mask on the technicians, it's easy to imagine false positives.