No, there certainly isn't. Thankfully, I can operate without the scientific labs of the modern era. It makes my job far easier, but, it's not a necessity.

[ there is a perk of her eyebrows and a small shrug. she remembers when most medical fact was ground breaking science. ]

Isn't that the point of the scientific method? You test a hypothesis in hopes to learn more. Failure or success will give you more information than you had previously. What do we know of the fog other than it can kill? What side effects does it give? A long term effect can only be observed in real time, unfortunately, so that is a bit of a long experience.