Spectral Medical Inc. announced the onboarding of the Mayo Clinic in Rochester, Minnesota, as its 19th clinical site for the Company's Tigris trial, a Phase 3 follow-on study evaluating the use of Polymyxin B Hemoperfusion ("PMX") in a randomized controlled trial of adults being treated for endotoxemia and septic shock. The Mayo Clinic is a premier medical center in the U.S. and is top ranked in more specialties than any other hospital in the nation, according to U.S. News & World Report.