Electrochemiluminescence (ECL) is a lab method where a small voltage makes special labels on antibodies emit light, and the instrument measures that light to quantify the target in the sample. Why labs like it Very sensitive and precise for low concentrations Wide measuring range, fewer dilutions Fast & stable reagents, reliable calibration on Elecsys/ECLIA platforms How a Roche ECL immunoassay works Sample mixes with antibodies (one carries a light-emitting ruthenium label;
