In this study, a MagLev-based, highlysensitive, and versatile biosensor platform for detecting minor differencesin the density of suspended objects is proposed for exosome detection.The developed platform utilizes antibody-functionalized microspheresto capture exosomal membrane proteins (ExoMPs) EpCAM, CD81, and CD151as markers for cancerous exosomes, exosomes, and non-small cell lungcancer (NSCLC)-derived exosomes, respectively. The gene discussed is CD81; the disease is non-small cell lung carcinoma.