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Abdominal CT scan 01/24/2007
An abdominal CT scan is an imaging method that uses x-rays to create cross-sectional pictures of the belly area. CT stands for computed tomography. See also: CT scan How the test is performed: You will be asked to lie on a narrow table that slides into the center of the CT scanner. Usually, you will lie on your back with your arms raised above the head. The health care provider may inject a dye into one of your veins. This helps certain diseases and organs show up better on the images. |
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Abdominal film 05/17/2007
Abdominal x-ray; X-ray - abdomen; Flat plate; KUB How the test is performed: The test is performed in a hospital radiology department or in the health care provider's office by an x-ray technologist. You lie on your back on the x-ray table. The x-ray machine is positioned over your abdominal area. You hold your breath as the picture is taken so that the picture will not be blurry. You may be asked to change position to the side or to stand up for additional pictures. |
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Abdominal MRI 01/24/2007
Nuclear magnetic resonance - abdomen; NMR - abdomen; Magnetic resonance imaging - abdomen; MRI of the abdomen How the test is performed: You will be asked to lie on a narrow table, which slides into a large tunnel-like tube. The health care provider may inject a dye through one of your veins. |
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Abdominal tap 10/18/2006
Peritoneal tap; Paracentesis How the test is performed: This test may be done in an office setting, in a treatment room, or in a hospital. The puncture site will be cleaned and shaved, if necessary. |
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Abdominal ultrasound 10/23/2006
Ultrasound - abdomen; Abdominal sonogram How the test is performed: The test is done in the ultrasound or radiology department. |
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Abdominal wall fat pad biopsy 01/22/2007
Abdominal wall biopsy; Biopsy - abdominal wall fat pad How the test is performed: Needle aspiration is the most common method of obtaining an abdominal wall fat pad biopsy . The skin of the abdomen is cleansed, and a local anesthetic may be used to numb the area. |
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Abscess scan - radioactive 10/23/2006
Radioactive abscess scan; Abscess scan How the test is performed: Blood is drawn from a vein, usually from the inside of the elbow or the back of the hand. The puncture site is cleaned with antiseptic. An elastic band is placed around the upper arm to apply pressure and cause the vein to swell with blood. |
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ACE levels 03/02/2006
Serum angiotensin-converting enzyme; SACE How the test is performed: Blood is drawn from a vein on the inside of the elbow or the back of the hand. The puncture site is cleaned with antiseptic, and an elastic band is placed around the upper arm to apply pressure and restrict blood flow through the vein. This causes veins below the band to fill with blood. |
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Acetylcholine receptor antibody 05/25/2007
Acetylcholine receptor antibody is a substance found in the blood of people with myasthenia gravis. The antibody attacks receptors for a chemical called acetylcholine, which sends signals from nerves to muscles and between nerves in the brain. How the test is performed: Blood is 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 (antiseptic). The health care provider wraps an elastic band around the upper arm to apply pressure to the area and make the vein swell with blood. |
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Acid loading test (pH) 10/15/2007
The acid loading test (pH) measures the ability of the kidney tubules to acidify urine when there is increased plasma acidity. See also: Urine pH How the test is performed: You'll be told to take ammonium chloride capsules by mouth for 3 days. Then, a urine and blood sample are taken. (The blood sample is needed to show that the ammonium chloride made the blood slightly acidic.) The laboratory measures the level of acid found in both samples. For information on how the urine and blood samples are obtained, see: Clean catch urine collection Venipuncture (blood draw) How to prepare for the test: Your doctor will tell you to take ammonium chloride capsules by mouth for 3 days prior to the test. |
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