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Question: From Algoma, Wisconsin, USA: I am a 56 year old male with type 1 diabetes. I was originally diagnosed as a type 2 and went through all five classes of oral medications with no success. I then progressed to insulin with multiple daily injections and finally have been placed on an insulin pump. When I was first diagnosed with diabetes, I had a C-Peptide of 1.9. The laboratory range was 1.1-4. My last C-Peptide was 1.0 again with the laboratory range of 1.1-4. It was then that my diagnosis was changed from type 2 to type 1. However, the GAD test was not positive but within normal range. I thought to have type 1 diabetes you needed a positive GAD test. Will I develop a positive GAD in time? Answer: A positive anti-GAD antibody titer is helpful in assigning a diagnosis of type 1 diabetes. However, a normal titer does not rule it out. Very often, the antibody titer can be positive at the time of diagnosis and revert to normal over time. Anti-GAD antibody appears to maintain a positive level longer than the others, but is not guaranteed to stay positive. In addition, when interpreting C peptide levels, it is important to make sure they are evaluated in light of the simultaneous glucose reading. For instance, a low C-peptide level at a time you are hypoglycemic is appropriate, compared to when you are hyperglycemic. JTL DTQ-20050809102310 Original posting 11 Aug 2005 Posted to Other and Diagnosis and Symptoms

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			Jump to a new section --[ Getting Around ]-- Home Page What's New Guide to CWD Help with Error Messages Index Privacy Policy Search Site Map --[ People ]-- Family Support Network Adults with Diabetes Care Photos Chat Rooms Conferences Kids with Diabetes Parents Parent Humor Scholarships and Financial Aid Grandparents Humorous Tidbits Jobs Mailing Lists CWD Forums Poetry and Art Videos Polls Quilt for Life Surveys Blogs --[ Clinic ]-- Ask the Diabetes Team Alternate Site Testing Alternative Treatments Care Suggestions CWD Español Diabetes Basics Diabetes at School 504 Plans Diabetes Camps Diabetes Dictionary Insulin Pumps Nutrition Podcasts Presentations Products Product Marketplace Sports Studies Warning Signs --[ Sources ]-- News and Information Diabetes Advocacy Links to Other Web Sites Press Releases Regional Information Services Support Groups --[ Feedback ]-- About CWD Get CWD Products Advertise Awards Contribute Your Experiences Disclaimer Letters to the Editor Logos and Linking Share our Brochures

Last Updated: Sun Jan 15 12:10:17 2006
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