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Each breast has 15 to 20 sections, called lobes. They are arranged like the petals of a daisy. Each lobe has many smaller structures called lobules. These end in dozens…

What is cardiac resynchronization therapy? Cardiac resynchronization therapy (CRT) is treatment to help restore the normal rhythm (timing pattern) of the heartbeat. A dual chamber pacemaker can help coordinate the…

What is diabetes insipidus in children? Diabetes insipidus (DI) is a condition caused by not enough antidiuretic hormone (ADH) in the body. ADH is also known as vasopressin. This is…

Does this test have other names? Electrolyte panel, Lytes, sodium (Na), potassium (K), chloride (Cl), bicarbonate (HCO3) What is this test? This test measures the main electrolytes in your body.…

What is acute fatty liver of pregnancy (AFLP)? AFLP is a rare, but serious, liver problem in pregnancy. With AFLP the liver cells have too much fat, which can damage…

What is radon? Radon is a cancer-causing, radioactive gas. It comes from the natural (radioactive) breakdown of uranium and radium in soil, rock, and water and is released into the…

Does this test have other names? Salicylate serum test, serum salicylate level test, serum salicylate concentration test What is this test? This is a blood test to check for salicylate…

The parts of blood Human blood is made of blood cells and a fluid called plasma. Plasma carries red and white blood cells and platelets. Each part of blood has a special…

What is total knee replacement? Total knee replacement is surgery to replace a damaged knee joint. A minimally invasive surgery uses a smaller cut (incision) than a traditional total knee…

Does this test have other names? Serum varicella immunoglobulin G antibody level, chickenpox antibody test What is this test? This test looks for antibodies in your blood that your body…