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
Which of the following cast is normal in urine
assistant
The correct answer is  Hyaline casts are both the most diffi- cult to visualize and least impoant type of casts encountered in the urine sediment. They are the result of solidifica- tion of Tamm-Horsfall mucoprotein, which is secreted by the renal tubular cells, and they may be present without significant proteinuria. Ref Harrison20th edition pg 277