Final answer:
The statement regarding spinning down lab samples is True. Centrifugation is a laboratory technique used in the preparation of urine, blood, and feces samples for analysis, utilizing a centrifuge to separate samples by density.
Step-by-step explanation:
The statement 'Spin down lab samples, such as urine, blood, and feces' is True. In the lab, a centrifuge is an essential device used to separate samples of different densities. For instance, blood samples are commonly placed into tubes (some with anticoagulants such as K2EDTA or lithium heparin) and centrifuged to separate plasma from the blood cells. The plasma can then be used for various diagnostic tests. Similarly, urine samples may be analyzed directly, while feces samples might undergo processes like freeze-drying and homogenization before further analysis with techniques such as liquid-liquid extraction.
Centrifuges significantly reduce the time needed for such separations and are crucial in enabling the analysis of small samples in various fields, including medicine and science. The use of a centrifuge enables lab technicians to efficiently prepare samples for a multitude of tests, ensuring that the constituents are adequately separated and ready for accurate analysis.