Blood Tests Diagnostic and Surgical Procedures Blood Tests Blood tests can provide valuable information about many systems and conditions of the body.
Blood testing refers to laboratory analysis of blood, usually drawn from a patient's arm.
A variety of different blood tests are available, to provide information about a variety of different systems and conditions of the body. In normal, healthy individuals, the blood level of each material falls within a certain range. Blood test results outside the normal range for a particular blood component can indicate a medical problem. There are hundreds of tests which may be ordered for the analysis of a patient's blood. The material in this article is provided for informational purposes only.