Which method is used for automated RBC counting?

The automated analyzer is the correct method used for automated red blood cell (RBC) counting. This technology leverages advanced techniques, often involving principles such as electrical impedance or laser light scattering, to accurately count and characterize blood cells. Automated analyzers are designed to handle a large volume of samples with high precision and reproducibility, making them highly efficient for routine laboratory use.

In contrast, microscopic examination, while useful for assessing various blood cell characteristics, relies on manual techniques and is not suitable for high-throughput counting. Manual counting chambers, although historically significant, require substantial manual labor and can be subject to user variability. Flow cytometry, while it can count cells, is a more complex method generally used for specific applications such as analyzing cell populations in detail, rather than routine RBC counting.

Hence, the automated analyzer stands out as the most efficient and standardized method for conducting automated RBC counts in the clinical laboratory setting.