The processor cycle duration of 13 hours refers to the duration of which?

• A. The complete processor cycle
• B. The staining stage
• C. The embedding stage
• D. The dehydration stage

Answer: (A)

The time shown is about the total run time of the tissue processing sequence. In a tissue processor, a cycle includes all steps needed to prep a specimen for embedding—fixation, dehydration through alcohols, clearing, infiltration with paraffin, and finally embedding. If a cycle duration is 13 hours, that reflects the entire process from start to finish, not any one stage alone. The dehydration stage or the embedding stage are parts of that cycle, but they don’t by themselves represent the full 13 hours. The staining stage happens after the tissue has already been embedded, sectioned, and mounted, so it isn’t part of the processor cycle.