Medical tests are performed to detect or diagnose a health issue, determine an appropriate treatment plan, confirm that a therapeutic intervention is working as intended, or monitor the progression of a condition. Medical tests can vary from evaluating bodily specimens, such as blood or urine, to invasive examinations, including biopsies or endoscopies. While most medical testing requires a healthcare professional, some test, such as monitoring blood glucose levels, can be administered by the individual patient in an outpatient setting.