Supposedly, yes, but other studies have shown that teflon pans continue to off gas after construction for a long time so it’s not just PTFE you have to worry about, but PFOA as well. And in addition, purchasing Teflon pans increases the amount of these chemicals making it into the soil and water streams so it doesn’t really matter how inert they are when they make it into your food, since you’re consuming them other ways and also destroying the environment at the same time!