Is a glucose level over 106 mg/dl after only 4 hours (not 8) of fasting cause for concern in someone who tested 91 mg/dl seven months earlier after fasting overnight (approximately 10 hours)? Generally, anything over 100 can be prediabetic, but both WebMD and the American Heart Association website say that this test requires eight hours of fasting. In this case, (91 after overnight fast in January, followed by 106 after four hour fast in August), (a) should it be assumed that the reading after the longer fast is more valid and the reading after the shorter fast is high because of too short a fasting period, or (b) is the increase of 15 mg/dl too much to attribute to fasting for only four hours, and evidence that the level is rising at an average rate of approximately 2 mg/dl per month.
This is in a 33-year-old white male, 5'6", 142 lbs at the first test, 134 lbs at the second test, nonsmoker, BP 128/76 at first test and 105/60 at second.
2007-08-30
11:37:05
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9 answers
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asked by
StephenWeinstein
7