Which analytical technique is commonly employed to separate blood components based on density?

Centrifugation is a widely utilized analytical technique for separating blood components based on their density. This process involves spinning samples at high speeds in a centrifuge, which generates a strong gravitational force. As a result, the different components of blood, such as plasma, red blood cells, white blood cells, and platelets, are separated according to their respective densities. The heavier components, like red blood cells, settle at the bottom, while lighter components, such as plasma, remain on top.

This technique is essential in clinical laboratories as it allows for the efficient isolation of various cellular and liquid components from blood samples, facilitating subsequent analyses and diagnostics. The other options, while useful analytical techniques, do not primarily focus on the separation of components based on density in the same straightforward manner as centrifugation does.