What is the purpose of a biopsy in medicine?

The purpose of a biopsy in medicine is to take a small sample of tissue for examination. This procedure allows healthcare providers to obtain cells from a specific area of the body, which can then be studied under a microscope or analyzed through various laboratory techniques. The examination of the tissue sample is crucial for diagnosing diseases, particularly cancers, as it can reveal the presence of abnormal cells, inflammation, or infections. Biopsies are vital in determining the nature of a disease and guiding treatment decisions, making them an essential tool in medical diagnostics.

In contrast, taking blood samples or analyzing imaging techniques serves different diagnostic purposes and does not involve directly sampling tissue. Administering medication directly does not relate to the diagnostic investigative role a biopsy plays in understanding tissue conditions.