Laboratory tests are scientific analyses performed on samples, such as blood, urine, or tissue, to help diagnose medical conditions. These tests provide valuable information about a person's health, allowing healthcare providers to make informed decisions regarding treatment and care. Common types of laboratory tests include blood tests, urinalysis, and biopsies. Each test serves a specific purpose, such as checking for infections, measuring organ function, or detecting diseases like cancer. Results from these tests are typically reviewed by medical professionals to guide patient management.