This invention discloses a
highly sensitive method for detecting
troponin I. This method utilizes the reusable nature of a
biosensor to perform multiple
fluorescence signal reads. Based on these multiple reads, it selects the most accurate concentration range for determining concentrations in the low-to-medium concentration range, achieving higher resolution detection results in both low and medium concentration areas. Furthermore, it incorporates
chemiluminescence detection, employing higher-resolution
chemiluminescence to determine the final concentration in the high-concentration region. Ultimately, this method achieves better resolution detection results across high, medium, and low concentration regions, enabling accurate identification of sample concentrations across all concentration ranges. It boasts a sensitivity of 0.824 ng / L and a detection range of 0.824 ng / L–100,000 ng / L. The method significantly reduces
sample volume, requiring only 20 μL for accurate detection, thus reducing
blood volume and improving
blood collection efficiency in physical examinations.