She received her Ph.D. in Pharmaceutical Sciences from the University of Southern California where she studied the structure of an intestinal drug transporter. Following her graduate studies, Dr. Knaack was a postdoctoral fellow at Lawrence Livermore National Laboratory where she studied yeast metabolism using accelerator mass spectrometry. Dr. Knaack then spent four years at the Centers for Disease Control and Prevention in Atlanta, GA where she developed novel diagnostic methods for measuring human exposure to organophosphorus nerve agents and paralytic shellfish toxins. Now at Mercer University, Dr. Knaack develops innovative diagnostic methods for measuring exposure to environmental and synthetic toxins. She teaches in several courses including gastrointestinal and renal anatomy, physiology and pharmacology as well as analytical methods and instrumentation.