This immunosensor exhibited good specificity and sensitivity toward the detection of CEA with a low detection limit.98 A sandwich-type nanoplatform immunosensor was fabricated using carboxylated MWCNT (CMWCNT)-embedded whiskered nanofibers for the detection of cardiac Troponin I (cTnI) as a cardiovascular disease biomarker. Here, TNNI3 is linked to cardiovascular disorder.