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The A1C test shows a patient's average blood glucose level over the last three months, expressed as a percentage, according to the National Institute of Diabetes and Digestive and Kidney Diseases. An estimated average gl... More »

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The A1c test is important for diabetes because it helps with diabetes management and research, states the National Institute of Diabetes and Digestive and Kidney Diseases. It also helps doctors judge the effectiveness of... More »

www.reference.com Health Diagnostics & Imaging

An A1C chart shows the amount of glycated hemoglobin, which is hemoglobin that has excess glucose bound to it, notes the National Institute of Diabetes and Digestive and Kidney Diseases. An A1C level is usually indicated... More »

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As of 2015, the normal range for blood sugar with the hemoglobin A1c test is anything below 5.7 percent, says the National Institute of Diabetes and Digestive and Kidney Diseases. The HbA1c test is a blood test that meas... More »

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A virtual colonoscopy is a procedure that uses X-rays or magnetic resonance imaging to create images of the colon and the rectum, according to the National Institute of Diabetes and Digestive and Kidney Diseases. A virtu... More »

www.reference.com Health Diagnostics & Imaging

During an upper gastrointestinal series, a patient stands or sits in front of an X-ray machine and swallows barium, says the National Institute of Diabetes and Digestive and Kidney Diseases. The barium swallow coats the ... More »

www.reference.com Health Diagnostics & Imaging

During a renal artery Doppler ultrasound, a technician places ultrasound gel on the skin and uses a device called a transducer to measure the blood flow through the renal arteries, explains the National Institute of Diab... More »

www.reference.com Health Diagnostics & Imaging