Medical investigations are procedures used by healthcare professionals to diagnose and monitor health conditions. These investigations can include tests such as blood tests, imaging studies like X-rays or MRIs, and biopsies. They help doctors gather important information about a patient's health and determine the best course of treatment. The results of medical investigations guide healthcare decisions and can reveal underlying issues that may not be apparent during a physical examination. By analyzing the data collected, doctors can identify diseases, assess the effectiveness of treatments, and make informed recommendations for patient care.