A biospecimen is a biological sample collected from a living organism, often used for research and medical purposes. Common types of biospecimens include blood, tissue, urine, and saliva. These samples help scientists study diseases, understand biological processes, and develop new treatments. Biospecimens are crucial in fields like biomedical research and clinical trials. They provide valuable insights into how diseases affect the body and can lead to advancements in personalized medicine. Proper collection, storage, and analysis of biospecimens are essential to ensure the accuracy and reliability of research findings.