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A blood test is a 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 .
LOINC. 33255-1, 24318-8, 69738-3. A white blood cell differential is a medical laboratory test that provides information about the types and amounts of white blood cells in a person's blood. The test, which is usually ordered as part of a complete blood count (CBC), measures the amounts of the five normal white blood cell types – neutrophils ...
MeSH. D013918. [ edit on Wikidata] The thrombin time ( TT ), also known as the thrombin clotting time ( TCT ), is a blood test that measures the time it takes for a clot to form in the plasma of a blood sample containing anticoagulant, after an excess of thrombin has been added. [ 1] It is used to diagnose blood coagulation disorders and to ...
Thromboelastography ( TEG) is a method of testing the efficiency of blood coagulation. It is a test mainly used in surgery and anesthesiology, although increasingly used in resuscitations in emergency departments, intensive care units, and labor and delivery suites. More common tests of blood coagulation include prothrombin time (PT) and ...
Schematic representation of a protein electrophoresis gel. Serum protein electrophoresis ( SPEP or SPE) is a laboratory test that examines specific proteins in the blood called globulins. [ 1] The most common indications for a serum protein electrophoresis test are to diagnose or monitor multiple myeloma, a monoclonal gammopathy of uncertain ...
24336-0. An arterial blood gas ( ABG) test, or arterial blood gas analysis ( ABGA) measures the amounts of arterial gases, such as oxygen and carbon dioxide. An ABG test requires that a small volume of blood be drawn from the radial artery with a syringe and a thin needle, [ 1] but sometimes the femoral artery in the groin or another site is used.
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The direct and indirect Coombs tests, also known as antiglobulin test ( AGT ), are blood tests used in immunohematology. The direct Coombs test detects antibodies that are stuck to the surface of the red blood cells. [ 1] Since these antibodies sometimes destroy red blood cells they can cause anemia; this test can help clarify the condition.