Which test does NOT measure phagocyte function?

The interleukin-2 (IL-2) assay is primarily used to assess lymphocyte activation and proliferation, particularly in the context of T cells. IL-2 is a cytokine that plays a crucial role in the immune response, particularly in promoting the growth and differentiation of T cells. While indirectly associated with immune responses that may involve phagocytes, the IL-2 assay does not directly evaluate the functional capacity of phagocytes, such as their ability to engulf and destroy pathogens.

On the other hand, the leukocyte adhesion molecule analysis, dihydrorhodamine reduction assay, and nitroblue tetrazolium (NBT) test are all specific assays designed to measure various aspects of phagocyte function. The leukocyte adhesion molecule analysis assesses the ability of phagocytes to adhere to endothelial cells, which is critical for their migration to sites of infection. The dihydrorhodamine reduction assay measures the respiratory burst, a process by which phagocytes produce reactive oxygen species to kill engulfed microorganisms. Similarly, the NBT test evaluates the ability of phagocytes to generate reactive oxygen species, indicating effective metabolic activity.

Thus, the IL-2 assay stands out as it focuses on T-cell activity rather than on the