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Tests could include:
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Blood Ammonia Test
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Nervous system signs may change. Signs include:Coarse, "flapping" shaking of the hands when attempting to hold the arms out in front of the body and lift the handsAbnormal mental status, particularly cognitive (thinking) tasks such as connecting ...
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The diagnosis of encephalopathy depends on the presence of acute or chronic liver disease; altered mental state such as confusion, stupor, or coma; symptoms of central nervous system damage; and abnormal wave patterns on an encephalogram. Diagnost...
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Common tests that are used to evaluate liver function include:.Albumin Alpha-1 antitrypsin ALP ALT AST Gamma-glutamyl transpeptidase(GGT) Prothrombin time.Please see individual tests for details on how each is performed.
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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...
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Detailed information on the most common liver function tests, including serum bilirubin test, serum albumin test, serum alkaline phosphatase test, serum aminotransferases, prothrombin time test, alanine transaminase test, aspartate transaminase test, gamm
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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...
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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...
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During a physical examination, a health care provider studies a patient''s body to determine the presence or absence of physical problems.
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Depending on the study being done, you may need to lie on your stomach, back, or side.A cranial CT scan produces images from your upper neck to the top of your head.You must be still during the exam, because movement causes blurred images. If you ...
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Computed tomography(CT) scans are completed with the use of a 360-degree x-ray beam and computer production of images. These scans allow for cross-sectional views of body organs and tissues.
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The most important consequence of head injury is traumatic brain injury. Head injury may occur either as a closed head injury such as the head hitting a car''s windshield, or as a penetrating head injury such as when a bullet pierces the skull.
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Computed tomography(CT) scans are completed with the use of a 360-degree x-ray beam and computer production of images. These scans allow for cross- sectional views of body organs and tissues.CT scans are used to image a wide variety of body struct...
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Injury to the head may damage the scalp, skull or brain. The most important consequence of head trauma is traumatic brain injury.
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Head injury is an injury to the scalp, skull, or brain. The most important consequence of head trauma is traumatic brain injury.
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CT imaging equipment includes conventional, spiral, multi-slice, and electron-beam computed tomography full-body scanners, which use x rays to acquire cross-sectional images and computer workstations to reconstruct acquired image data for display ...
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A blood glucose test measures the amount of sugar(glucose) in a sample of your blood.Random blood sugar; Blood sugar level; Fasting blood sugar.Blood is typically drawn from a vein, usually from the inside of the elbow or the back of the hand. The...
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Glucose tests are used to determine the concentration of glucose in blood, urine, cerebrospinal fluid, and other body fluids. These tests are used to detect an increased blood glucose(hyperglycemia), a decreased blood glucose(hypoglycemia), increa...
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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.A...
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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 oxaloaceti...
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Bilirubin is a product that results from the breakdown of hemoglobin. Total and direct bilirubin are usually measured to screen for or to monitor liver or gallbladder problems.Total bilirubin; Unconjugated bilirubin; Indirect bilirubin; Conjugated...
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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 jaundice in about 99% of newborns.
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Gamma-glutamyl transpeptidase(GGT) is a test to measure the amount of the enzyme GGT in the blood.Blood is typically drawn from a vein, usually from the inside of the elbow or the back of the hand. The site is cleaned with germ-killing medicine(an...
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This test roughly measures the types of protein in the fluid (serum) part of a blood sample. See also:Immunoelectrophoresis - serumImmunofixation - serumSerum globulin electrophoresisLipoprotein electrophoresisA blood sample is needed.
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Separation is based on differences in the charge(and sometimes size) of the molecules, which determines their rate of movement in an electric field. Serum protein electrophoresis is a screening test that measures the major blood proteins.
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Serum protein electrophoresis(SPEP) is a screening test that measures the major blood proteins by separating them into five distinct fractions: albumin, alpha 1, alpha 2, beta, and gamma proteins. Protein electrophoresis can also be performed on u...
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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.SGPT; Serum glutamat...
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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.
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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.Medical testing of alkaline phosphatase is concerned with the enzyme tha...
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Prothrombin time(PT) is a blood test that measures the time it takes for the liquid portion(plasma) of your blood to clot.
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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.The PT test is used to monitor patients taking certain medications as well as to help diagnose...
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These are primary hemostasis, which is the interaction of the injured blood vessel and platelets; secondary hemostasis, which is referred to historically as the blood coagulation process; and tertiary hemostasis, which is the process of fibrinolys...
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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.A blood sample is needed.
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A platelet count is a test to measure how many platelets you have in your blood. Platelets help the blood clot.
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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...
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A magnetic resonance imaging(MRI) scan of the head is a noninvasive method to create detailed pictures of the brain and surrounding nerve tissues.Unlike x-rays and computed tomographic( CT) scans, which use radiation, MRI uses powerful magnets and...
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Controls mental and physical actions of the organism.The brain, with the spinal cord and network of nerves, controls information flow throughout the body, voluntary actions, such as walking, reading, and talking, and involuntary reactions, such as...
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Congenital brain defects are a group of disorders of brain development that are present at birth.Brain development begins shortly after conception and continues throughout the growth of a fetus. A complex genetic program coordinates the formation,...
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Brain abscess is a bacterial infection within the brain.The brain is usually well insulated from infection by bacteria, protected by the skull, the meninges(tissue layers surrounding the brain), the immune system, and the highly regulated barrier ...
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A brain biopsy is the removal of a small piece of brain tissue for the diagnosis of abnormalities of the brain, such as Alzheimer''s disease, tumors, infection, or inflammation.By examining the tissue sample under a microscope, the biopsy sample pr...
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A brain tumor is an abnormal growth of tissue in the brain. Unlike other tumors, brain tumors spread by local extension and rarely metastasize(spread) outside the brain.
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Congenital brain defects are a group of disorders of brain development.Brain development begins shortly after conception and continues throughout the growth of a fetus. A complex genetic program coordinates the formation, growth, and migration of ...
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The brain is the part of the central nervous system located in the skull. It controls the mental processes and physical actions of a human being.The brain, along with the spinal cord and network of nerves, controls information flow throughout the ...
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The brain is a large mass of soft nervous tissue made up of both neurons and supporting glial cells lying within the cranium of the skull. The brain contains both gray and white matter.
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Magnetic resonance imaging(MRI) scanners rely on the principles of atomic nuclear-spin resonance. Using strong magnetic fields and radio waves, MRI collects and correlates deflections caused by atoms into images.
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Traumatic brain injury(TBI) is the result of physical trauma to the head causing damage to the brain. This damage can be focal, or restricted to a single area of the brain, or diffuse, affecting more than one region of the brain.
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The brain is the part of the central nervous system(CNS) inside the skull(the part outside the skull is the spinal cord). It gives rise to cognitive thought processes and controls various body functions including muscular activity, speech, sight, ...
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A brain tumor is an abnormal growth of tissue, either malignant(cancerous) or benign(noncancerous), in the brain. Each year, more than 17,000 brain tumors are diagnosed in the United States.A benign brain tumor is composed of slow-growing noncance...
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Like all other parts of the body, the brain and central nervous system are made up of cells that ordinarily grow and divide to create new cells as needed. This is usually an orderly process; but when cells lose their ability to grow normally or to...
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A computed tomography(CT) scan is an imaging method that uses x-rays to create cross-sectional pictures of the body.CAT scan; Computed axial tomography scan; Computed tomography scan.You will be asked to lie on a narrow table that slides into the ...
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Computed tomography (CT) is a test that combines x-rays and computer scans. The result is a detailed picture that can show problems with soft tissues (such as the lining of your sinuses), organs (such as your kidneys or lungs), and bones.
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Detailed information on CT scan, including how the CT scan is performed and what happens after the procedure
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Detailed information on ultrafast computed tomography scans, also called ultrafast CT scan or ultrafast CAT scan, including information on how the procedure is performed
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Detailed information on computed tomography scans, also called CT scan or CAT scan, including information on how the procedure is performed
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Detailed information on ultrafast computed tomography (CT) scan, including reasons for the procedure, risks of the procedure, what to expect, and discharge instructions
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Computed tomography(CT) scanning is a valuable diagnostic tool that provides physicians with views of internal body structures. During a CT scan, multiple x rays are passed through the body, producing cross-sectional images, or"slices," on a catho...
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Computed tomography(CT), formerly referred to as computerized axial tomography(CAT), is a common diagnostic imaging procedure that uses x rays to generate images(slices) of the anatomy.Computed tomography(CT) is an x-ray imaging procedure used for...
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Computed tomography(CT) scans are completed with the use of a 360-degree x-ray beam and computer production of images. These scans allow for cross-sectional views of body organs and tissues.CT scans are used to image a wide variety of body structu...
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Computed tomography scanning, also called CT scan, CAT scan, or computerized axial tomography, is a diagnostic tool that provides views of internal body structures using x rays. In the field of mental health, a CT scan may be used when a patient s...
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Computed tomography(also known as CT, CT scan, CAT, or computerized axial tomography) scans use x rays to produce precise cross-sectional images of anatomical structures.With the development of modern computers, the scans enhanced digital capabili...
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Is there an alternative to iodine as a contrast medium in a CT scan?
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What is the difference between a pelvic CT scan and an abdominal CT scan?
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Magnetic resonance imaging(MRI) is a noninvasive way to take pictures of the body.Unlike x-rays and computed tomographic( CT) scans, which use radiation, MRI uses powerful magnets and radio waves. The MRI scanner contains the magnet.
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Cardiac nuclear imaging is also called a "perfusion scan.” A radioactive tracer is delivered into the bloodstream. Then a camera scans the tracer in the blood as it flows through the heart muscle.
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Detailed information on magnetic resonance imaging, including how the image is performed and what happens following the procedure
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New MRI machines and new techniques result in images that show prostate cancer in much greater detail, allowing biopsies to be targeted more precisely, and thus cancer staging can be more accurate as well.
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Magnetic resonance imaging (MRI) is a test that lets your doctor see detailed pictures of the inside of your body. MRI combines the use of strong magnets and radio waves to form an MRI image.
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When I had an MRI of my knee, I was told the test was dangerous for people who have metal devices in their bodies. Since then, I developed angina and my cardiologist put in a metal stent. If I need an MRI in the future, will I be able to get one?
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Studies have found that MRI tests used in addition to mammography detected more cancers in women at high risk for breast cancer. Women at average risk would not necessarily benefit from the additional testing.
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A Harvard Medical School physician answers your question about the safety of MRIs for those who have stents.
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For women at high genetic risk, adding MRI screening to mammography may improve early detection of breast cancer.
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How safe is it for a baby who is 6 months old to have an MRI?
Claire McCarthy, M.D., is a senior medical editor for Harvard Health Publications. She is an instructor in pediatrics at Harvard Medical School, an attending physician at Children's Hospital of Boston, and co-director of the pediatrics department at Martha Eliot Health Center, a neighborhood health service of Children's Hospital. The author of two books, "Learning How the Heart Beats" and "Everyone's Children", Dr. McCarthy was a regular columnist for "Sesame Street Parents Magazine" from 1995 to 1998 and is currently a contributing editor for "Parenting Magazine".
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Is a regular MRI more accurate then an open MRI?
Diana Post, M.D., is an assistant professor of medicine at Harvard Medical School and a member of the Department of Medicine at Brigham and Women's Hospital.
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Persons with pacemakers cannot get an MRI because it conflicts with the pacemaker's function. Future pacemakers will likely be made MRI-safe, but this will probably take at least several more years.
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In some cases, chemical agents such as gadolinium can be injected to improve the contrast between healthy and diseased tissue.A single MRI exposure produces a two-dimensional image of a slice through the entire target area. A series of these image...
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Magnetic resonance imaging(MRI) is a unique and versatile medical imaging modality. Doctors can obtain highly refined images of the body''s interior using MRI.
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Magnetic resonance imaging(MRI) is one of the newest diagnostic medical imaging technologies that uses strong magnets and pulses of radio waves to manipulate the natural magnetic properties in the body to generate a visible image. In the field of ...
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Magnetic resonance imaging(MRI) is the newest, and perhaps most versatile, medical imaging technology available. Doctors can get highly refined images of the body''s interior without surgery, using MRI.
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Magnetic resonance imaging(MRI) is a diagnostic imaging procedure that uses radio waves, a magnetic field, and a computer to generate images of the anatomy.MRI is used to visualize the body to assist doctors in their efforts to diagnose certain di...
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Magnetic resonance imaging(MRI) is one of the newest, and perhaps most versatile, medical imaging technology available. Doctors can get highly refined images of the body''s interior without surgery using MRI.
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People with certain kinds of pacemakers or ICDs can safely undergo an MRI, as long as a series of safety precautions is carefully followed.
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Detailed information on magnetic resonance imaging (MRI), including information on how the procedure is performed
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A complete blood count(CBC) test measures the following:.The number of red blood cells(RBCs) The number of white blood cells(WBCs) The total amount of hemoglobin in the blood The fraction of the blood composed of red blood cells( hematocrit) The s...
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One of the most commonly ordered clinical laboratory tests, a blood count, also called a complete blood count(CBC), is a basic evaluation of the cells(red blood cells, white blood cells, and platelets) suspended in the liquid part of the blood(pla...
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A complete blood count(CBC) is a series of tests used to evaluate the composition and concentration of the cellular components of blood. It consists of the following tests: red blood cell(RBC) count, white blood cell(WBC) count, and platelet count...
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The clinical laboratory test that evaluates the three main cellular components of peripheral blood(red cells, white cells, and platelets) is called the"complete blood count"(CBC). It is used commonly to assess whether a patient is anemic(low red c...
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A complete blood count(CBC) is a series of tests used to evaluate the composition and concentration of the cellular components of blood. It consists of the following tests: red blood cell(RBC) count, white blood cell(WBC) count, and platelet count...
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Kidney function tests are common procedures used to evaluate kidney(renal) function. Refer to the following documents for details of how each test is performed:.
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Kidney function tests are a cadre of tests that are used to screen for and manage renal disease. Tests commonly used for this purpose are plasma creatinine, blood urea nitrogen(BUN), electrolytes, and routine urinalysis.
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Kidney function tests is a collective term for a variety of individual tests and procedures that can be done to evaluate how well the kidneys are functioning. A doctor who orders kidney function tests and uses the results to assess the functioning...
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Kidney function tests is a collective term for a variety of individual tests and procedures that can be done to evaluate how well the kidneys are functioning.The kidneys, the body''s natural filtration system, perform many vital functions, includin...
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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 ...
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