system
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.
user
Thiamine level is best monitored by
assistant
The correct answer is  The activation of apo-transketolase in erythrocyte lysate by thiamine diphosphate added in vitro has become the accepted index of thiamine nutritional status.