The upper limit value of the cytocentrifuge speed range is which of the following?

• A. 800 rpm
• B. 1000 rpm
• C. 1200 rpm
• D. 200 rpm

Answer: (B)

Cytocentrifugation uses relatively gentle centrifugal force to sediment cells onto a slide so they form a thin, well-preserved monolayer. The speed is limited because higher g-forces can damage delicate cells and create artifacts, while too-low speeds won’t sediment enough cells effectively. For most cytospin preparations, about 1000 revolutions per minute is the practical upper limit that balances efficient deposition with cell integrity. speeds near 800 rpm are usable but not the maximum, and 1200 rpm would generally exceed the recommended upper range for routine cytology, while 200 rpm is too low to sediment cells properly.