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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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The following enzyme activity is measured in Beriberi:
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The correct answer is  In thiamine deficiency transketolase activity in erythrocytes is decreased. Measures of RBC transketolase is a reliable diagnostic test for thiamine deficiency. Beriberi is caused by thiamine deficiency. Ref: Clinical Laboratory Medicine, 2nd Ed, Page 322