A diagnostic tool is any test, procedure, or technology used to identify a medical condition or disease. Diagnostic tools may include physical examination, laboratory tests, imaging studies such as X-rays, ultrasounds, and MRI scans, as well as biopsy, endoscopy, and other medical procedures. The choice of diagnostic tool(s) used to diagnose a particular condition will depend on several factors, including the patient's symptoms, medical history, and the suspected underlying cause of their symptoms. Diagnostic tools are an essential component of modern medicine and are used to help healthcare providers make accurate diagnoses and develop appropriate treatment plans for their patients.