This Lecture series notebook was created from the teaching experiences impacted to the pre-clinical students of the Department of Medical Laboratory Science, Edo University, Iyamho-Nigeria as part of the courses allocated to me to teach by the Edo University, Iyamho-Nigeria.The book will provide the required basic knowledge for any interested student or teacher in preparation for a full professional and academic training/teaching at the clinical/professional levels in Medical Laboratory Science, Laboratory medicine or pathological science programmes. It will also serve as a source of revision exercise for professionals in health sciences. There are five lecture series including: Introduction to Chemical pathology; Specimen Storage and disposal; Medical Laboratory hazards and Safety procedures ; Techniques and principles of sterilization and disinfection and Breeding of laboratory animals.The Lecture series was edited by Professor A.A. OLADELE of the Department of Medical Laboratory Science,, Afe Badalona University, Ado-Ekiti, Nigeria and approved by Edo University, Iyamho-Nigeria