NHCO Phlebotomy Practice Test

What is the consequence of not balancing a centrifuge during use?

To shorten processing time To color-code samples To increase noise levels To prevent rotor damage and ensure accurate separation

Correct Answer:

To prevent rotor damage and ensure accurate separation

Explanation:

Balancing loads in a centrifuge is essential because the rotor is designed to spin with symmetrical forces. When the load is not balanced, the centrifugal forces become uneven, causing excessive vibration and sideways stress on the rotor, bearings, and housing. This increases wear and can crack or warp the rotor, damage the lid mechanism, or even cause tubes to break or be ejected. The uneven forces also disrupt how the sample separates, leading to poor or inconsistent results. So, the main consequence is rotor damage risk and loss of accurate separation, which is why proper balancing is critical. To prevent this, always balance by using equal volumes in tubes of the same type and placing them opposite each other in the rotor.

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