Editing Blood test (section)

{{short description|Laboratory analysis performed on a blood sample}}
{{for|the novel by Jonathan Kellerman|Blood Test (novel)}}
[[File:Hematology .jpg|thumb|Modern hospital hematology laboratory]]

A '''blood test''' is a [[medical laboratory|laboratory]] analysis performed on a [[blood]] sample that is usually extracted from a [[vein]] in the arm using a [[hypodermic needle]], or via [[fingerprick]]. Multiple tests for specific blood components, such as a [[glucose test]] or a [[cholesterol test]], are often grouped together into one [[test panel]] called a '''blood panel''' or '''blood work'''. Blood tests are often used in [[health care]] to determine [[physiological]] and [[biochemical]] states, such as [[disease]], [[mineral]] content, [[pharmaceutical drug]] effectiveness, and organ function. Typical [[medicine#Clinical practice|clinical]] blood panels include a [[basic metabolic panel]] or a [[complete blood count]]. Blood tests are also used in [[drug test]]s to detect drug abuse.