A comprehensive encyclopedia for all medical lab tests (more than 410 tests), which includes the following items for each test: • The test overview • Why and when to get tested? • The required sample and how it is collected for testing. • The needed test preparations. • What is being tested? • How is this test used? • When is it ordered? • What does the test result mean? • Is there anything else you should know? A comprehensive encyclopedia for all diseases (more than 390 diseases), which inclu