Immunoturbidimetry measure the turbidity of a sample to determine the level of an analyte. Upon addition of the assay reagent, antibodies and antigen cluster to form an immune complex that precipitates, increasing the turbidity of the sample. When light is passed through the reaction solution, some light is scattered by the sample, some light is absorbed by the sample and the rest passes through the sample. Immunoturbidimetry measures the absorbance of the light by the sample The level of analyte is determined by comparison with a calibrator of known concentration.
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