PMID: 2096054Jun 1, 1990Paper

Value of 5-hour glucose tolerance test in the diagnosis of insulinoma

Zhonghua wai ke za zhi [Chinese journal of surgery]
Y G Konng

Abstract

We probed into the role of glucose tolerance test (GTT) in the diagnosis of insulinoma. According to the test results, 63 cases of insulinoma fell into four types. Insulinomas failed to respond normally to the stimulus of glucose and the response of insulinoma was nonspecific within 120 minutes after glucose load. The peaks of glucose tolerance curves were delayed and hypoglycemia was the rule before and 300 minutes after glucose load. GTT results of the same patient were varied from time to time. The results suggest that five-hour GTT is superior to three-hour GTT in the diagnosis of insulinoma.

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