Learn about the many tests and examinations your blood sample undergoes in a lab.

Your blood serves numerous roles to maintain your health. To carry out these functions, blood contains a multitude of components, including red blood cells that transport oxygen, nutrients and ...

Following your doctor’s instructions is the most important part of preparing for a blood test. Other tips include sleeping well, staying hydrated, and avoiding certain foods and drinks. Learn more.

Normal blood test ranges Depending on the lab that analyzed your sample, the results from your blood test may be broken down into individual tests or collections of related tests called panels.

Lab testing provides doctors with essential information to help them diagnose and treat disease. Here’s what happens behind the scenes after you roll up your sleeve for a blood draw.

If you don't know your blood type, use one of these three methods to figure it out.