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Hepatitis A Learning Center

Raised IgM and IgG antibodies to hepatitis A (IgM is usually positive before IgG) Elevated liver enzymes (liver function tests)
Source:ADAM
Date:October 18, 2009
The early, flu-like symptoms and jaundice, as well as rapid recovery, suggest infectious hepatitis without special tests being done. If there is any question, a specialist in gastrointestinal disorders or infectious diseases can confirm the diagno...
Source:Gale Encyclopedia of Medicine
Hepatitis A symptoms often go unrecognized because they are not specific to hepatitis A, thus a blood test (IgM anti-HAV) is required to diagnose HAV infection. This test detects a specific antibody, called hepatitis A IgM, that develops when HAV ...
Source:Gale Encyclopedia of Children's Health
Common tests that are used to evaluate liver function include: Albumin; Alpha-1 antitrypsin; ALP; ALT; AST; Gamma-glutamyl transpeptidase (GGT; Prothrombin time; Serum bilirubin; Urine bilirubin. Please see individual tests for details on how each...
Source:ADAM
Date:November 16, 2008
Liver function tests, or LFTs, include tests for bilirubin, a breakdown product of hemoglobin, and ammonia, a protein byproduct that is normally converted into urea by the liver before being excreted by the kidneys. LFTs also commonly include test...
Source:Gale Encyclopedia of Medicine
Liver function tests, or LFTs, include tests that are routinely measured in all clinical laboratories. LFTs include bilirubin, a compound formed by the breakdown of hemoglobin; ammonia, a breakdown product of protein that is normally converted int...
Source:Gale Encyclopedia of Surgery
Liver function tests, or LFTs, include tests that are routinely measured in all clinical laboratories. LFTs include bilirubin, a compound formed by the catabolism of hemoglobin; ammonia, a product of protein catabolism that is normally converted i...
Source:Gale Encyclopedia of Nursing and Allied Health
During a physical examination, a health care provider studies a patient's body to determine the presence or absence of physical problems. A typical physical examination includes: Inspection (looking at the body; Palpation (feeling the body with ha...
Source:ADAM
Date:February 23, 2009
The health status of populations and of individuals is assessed for many reasons. Assessing needs for care helps guide the allocation of resources— diagnostic assessments guide treatment, prognostic assessments contribute to planning, and assessin...
Source:Gale Encyclopedia of Public Health
Alanine transaminase (ALT) is an enzyme found in the highest amounts in the liver. Injury to the liver results in release of the substance into the blood. This article discusses the test to measure the amount of ALT in the blood.
Source:ADAM
Date:February 22, 2009
AST (aspartate aminotransferase) is an enzyme found in high amounts in heart muscle and liver and skeletal muscle cells. It is also found in lesser amounts in other tissues. This article discusses the test to measure the amount of AST in the blood.
Source:ADAM
Date:February 23, 2009
The Aspartate aminotransferase test measures levels of AST, an enzyme released into the blood when certain organs or tissues, particularly the liver and heart, are injured. Aspartate aminotransferase (AST) is also known as serum glutamic oxaloacet...
Source:Gale Encyclopedia of Medicine
Alkaline phosphatase (ALP) is a protein found in all body tissues. Tissues with particularly high amounts of ALP include the liver, bile ducts, and bone. A blood test can be done to measure the level of ALP. See also: ALP isoenzyme test
Source:ADAM
Date:May 7, 2009
Alkaline phosphatase is an enzyme found throughout the body. Like all enzymes, it is needed, in small amounts, to trigger specific chemical reactions. When it is present in large amounts, it may signify bone or liver disease or a tumor.
Source:Gale Encyclopedia of Medicine
Prothrombin time (PT) is a blood test that measures the time it takes for the liquid portion (plasma) of your blood to clot. See also: Partial thromboplastin time (PTT)
Source:ADAM
Date:February 21, 2009
The prothrombin time test belongs to a group of blood tests that assess the clotting ability of blood. The test is also known as the pro time or PT test.
Source:Gale Encyclopedia of Medicine
Hemostasis has been described as "a process by which the body spontaneously stops bleeding and maintains blood in the fluid state within the vascular compartment." There are at least four major systems that are involved in this complex process: th...
Source:Gale Encyclopedia of Nursing and Allied Health
A platelet count is a test to measure how many platelets you have in your blood. Platelets help the blood clot. They are smaller than red or white blood cells.
Source:ADAM
Date:February 21, 2009
A platelet count is a diagnostic test that determines the number of platelets in the patient's blood. Platelets, which are also called thrombocytes, are small disk-shaped blood cells produced in the bone marrow and involved in the process of blood...
Source:Gale Encyclopedia of Medicine
This test roughly measures the types of protein in the fluid (serum) part of a blood sample. See also: Immunoelectrophoresis - serum; Immunofixation - serum; Serum globulin electrophoresis.
Source:ADAM
Date:March 2, 2009
Electrophoresis is a technique used to separate the different components (fractions) of a mixture, such as proteins in a biological sample. Separation is based on differences in the charge (and sometimes size) of the molecules, which determines th...
Source:Gale Encyclopedia of Nursing and Allied Health
Electrophoresis is a technique used to separate different elements (fractions) of a blood sample into individual components. Serum protein electrophoresis (SPEP) is a screening test that measures the major blood proteins by separating them into fi...
Source:Gale Encyclopedia of Medicine
Gamma-glutamyl transpeptidase (GGT) is a test to measure the amount of the enzyme GGT in the blood.
Source:ADAM
Date:February 23, 2009
Bilirubin is a yellowish pigment found in bile, a fluid produced by the liver. This article discusses the laboratory test done to measure bilirubin in the blood. Total and direct bilirubin are usually measured to screen for or to monitor liver or ...
Source:ADAM
Date:February 23, 2009
Monitors the liver function of newborns. The bilirubin test is a blood test to monitor the liver function of newborns. The rapid destruction of red blood cells after birth produces more bilirubin than the infant's liver can handle, causing some ja...
Source:Gale Encyclopedia of Childhood and Adolescence
Albumin is a protein made by the liver. A serum albumin test measures the amount of this protein in the clear liquid portion of the blood.
Source:ADAM
Date:February 23, 2009
The hepatitis virus panel is a series of blood tests used to detect current or past infection by hepatitis A, hepatitis B, or hepatitis C. It can screen blood samples for more than one kind of hepatitis virus at the same time. Antibody and antigen...
Source:ADAM
Date:January 9, 2009
Viral hepatitis is any type of liver inflammation caused by a viral infection. The three most common viruses now recognized to cause liver disease are hepatitis A , hepatitis B , and hepatitis non-A, non-B (also called hepatitis C ). Several other...
Source:Gale Encyclopedia of Medicine
Viral hepatitis is any type of liver inflammation caused by a viral infection . The three most common viruses now recognized to cause liver disease are hepatitis A (infectious hepatitis), hepatitis B (serum hepatitis), and hepatitis C (non-A, non-...
Source:Gale Encyclopedia of Nursing and Allied Health
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