Miniaturized Electrochemical Immunosensor for Label‐Free Detection of Growth Hormone

A miniaturized immunosensor was developed in connection with disposable screen-printed carbon strips (SPCS) for the point-of-care detection of growth hormone. The performance of the miniaturized system was studied using growth hormone (GH) as the target protein and compared with a conventional electrochemical analyzer. The detection limit of 25 pg/mL was observed for GH in 20 mL sample volume, which indicated that this versatile platform can be easily adapted for decentralized electrochemical immunosensing of clinically important proteins.