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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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Enzyme activity measured in beri-beri is
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The correct answer is  The transketolase activity in erythrocytes  is decreased. MeasuremenL of  RBC transketolase activity is  a  reliable diagnostic test to  assess thiamine deficiency.
Ref: Satyanarayana, 3rd ed, pg-136