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Immunoassay & Platelet Aggregation
The sample-reagent mixture contains artificial particles that can aggregate when there is an antigen-antibody reaction or particles that have a natural capability to aggregate like platelets. The mixture is exposed to light of a high wavelength, and the change in light absorbance caused by the formation of aggregates is detected as the change in transmitted light. This is used for D-dimer assays and platelet aggregation assays (VWF:RCof, ADP, Collagen, Arachidonic Acid, Epinephrine).