John Tlumacki/The Boston Globe via Getty Illustrations or photos When you have at any time gotten a vaccine or acquired an intravenous drug and didn't arrive down with a likely daily life-threatening fever, you'll be able to thank a horseshoe crab. When testing vaccines, LAL is used at multiple ways https://mariowmbpa.mybjjblog.com/5-simple-statements-about-what-do-you-use-horseshoe-crab-blood-for-explained-43541621