Crotsley is a versatile PhD holder in Chemistry & Biochemistry with over 20 years of diverse experience spanning academia, research, pharmaceutical management, and clinical analysis. Her expertise covers biochemistry, pharmacology, physiology, and biotechnology, complemented by strong skills in quality assurance, regulatory affairs, and scientific writing. She has served as an Assistant Professor, Course Coordinator, and Research Assistant, teaching undergraduate and high school students (Chemistry, Math) and leading research projects on medicinal plants, antimicrobial agents, and public health. With 15+ years of clinical lab experience, she is proficient in HPLC, GC-MS, cell culture, and microscopy.