| CTC | circulating tumor cell |
| ctDNA | circulating tumor DNA |
| EV | extracellular vesicle |
| WBC | white blood cell |
| RBC | red blood cell |
| EpCAM | epithelial cell adhesion molecule |
| CK | cytokeratin |
| POCT | point-of-care testing |
| EMT | epithelial–mesenchymal transition |
| MET | mesenchymal- epithelial transition |
| ISET | isolation by size of epithelial tumor cell |
| DLD | deterministic lateral displacement |
| ECL | electrochemiluminescence |
| PEC | photoelectrochemical |
| EIS | electrochemical impedance spectroscopy |
| LSV | linear sweep voltammetry |
| LOD | the limit of detection |
| MPA | mercaptopropionic acid |
| NP | nanoparticle |
| AuNS | Au nanostar |
| GC | glassy carbon |
| DPV | differential pulse voltammetry |
| RCA | rolling circle amplification |
| HRP | horseradish peroxidase |
| AuNP | Au nanoparticle |
| AB | acetylene black |
| HCNT | hexagonal carbon nitride tube |
| GS | graphene nanosheet |
| CV | cyclic voltammetry |
| QD | quantum dot |
| PDMS | polydimethylsiloxane |
| AuNW | Au nanowire |
| DM | daunomycin |
| TS | telomerase primer |
| CD | carbon dot |
| MN | magnetic nanosphere |
| MB | magnetic bead |
| PtNP | Pt nanoparticle |
| ALP | alkaline phosphatase |
| FDG | di-β-D-pyridine galactoside |
| FMG | fluorescein monogalactoside |
| ET | electrophoresis titration |
| MRB | moving reaction boundary |
| CEACAM5 | carcinoembryonic antigen-related cell adhesion molecules 5 |
| RI | refractive index |
| ACNP | aptamer-conjugated nanoparticle |
| GO | graphene oxide |
| EGFR | epidermal growth factor receptor |
| PSMA | prostate specific membrane antigen |