AgNWs	Silver Nanowires
APTES	3-Aminopropyl triethoxy silane
AuPt NPs	Gold and Platinum Alloy Nanoparticles
BSA	Bovine Serum Albumin
CA1	Carbonic Anhydrase 1
CAT	Catalase
CEA	Carcinoembryonic Antigen
CFTR	Cystic Fibrosis Transmembrane Conductance Regulator
CO	Carbon Monoxide
CR	Chemiresistive
CS	Chitosan
CV	Cyclic Voltammetry
CVD	Chemical Vapour deposition
cTnI	Cardiac Troponin I
CYFRA-21-1	Cytokeratin 19 Fragment
DA	Dopamine
DNA	Deoxyribonucleic Acid
DPV	Differential Pulse Voltammetry
EC	Electrochemical
ECD	Electrochemical Deposition
ECG	Electrocardiograms
EEG	Electroencephalograms
ELISA	Enzyme-Linked Immunosorbent Assay
EMG	Electromyograms
EPD	Electrophoretic Deposition
EtOH	Ethanol
GCE	Glassy Carbon Electrode
GFET	Graphene Field-Effect Transistor
GNFET	Graphene-Nafion Field-Effect Transistor
GOx	Glucose Oxidase
Gr	Graphene
GrO	Graphene Oxide
GrP	Graphene on Paper
HIS-rGrO	L-Histidine-Modified Reduced Graphene Oxide
HWE	Hybrid Working Electrode
IDO	Indium Tin Oxide
IFN-$\gamma$	Interferon Gamma
IgG	Immunoglobulin G
IL-6	Interleukin-6
IL-8	Interleukin-8
IoT	Internet of Things
ITO	Indium Tin Oxide
LBGr	Laser-Burned Graphene
LDH	Lactate Dehydrogenase
LDT	Low Detection Threshold
LIG	Laser-Induced Graphene
LOD	Limit of Detection
LOQ	Quantification Limit
LOx	Lactate Oxidase
MeOH	Methanol
MMP-9	Matrix Metalloproteinase-9
MOF	Metal–Organic Framework
MOFs	Metal–Organic Frameworks
MWCNT	Multiwalled Carbon Nanotube
Na+	Sodium Ion
NH+	Ammonium Ion
NH3	Ammonia
NMO	Nanostructured Metal Oxide
nHfO2	Nanostructured Hafnium Oxide
NO	Nitric Oxide
NTA	Nanoparticle Tracking Analysis
OA	Octylamine
OS	Oxidative Stress
OSI	Ocular Scatter Index
PAH	Polycyclic Aromatic Hydrocarbon
PANI	Polyaniline
PASE	1-Pyrenebutanoic Acid Succinimidyl Ester
PBS	Phosphate Buffer Saline
PDMS	Polydimethylsiloxane
PEDOT-Gr	Poly(3,4-ethylene dioxythiophene)-Graphene
PI	Polyimide
PMMA	Polymethyl Methacrylate
POC	Point-of-Care
ppb	Parts Per Billion
ppm	Parts Per Million
PGr	Porous Graphene
PGr-Cu BTC	Pristine Graphene-Copper Benzene-1,3,5-tricarboxylate
PGr-SnO2	Pristine Graphene-doped Tin Oxide
PGr-UiO 66	Pristine Graphene-Zirconium 1,4-dicarboxybenzene
PGr-ZIF 8	Pristine Graphene-2-methylimidazole Zinc Salt
PS67-b-PAA27	Polystyrene-block-poly(acrylic acid)
PSA	Prostate-Specific Antigen
PTFE	Polytetrafluoroethylene
PVA	Polyvinyl Alcohol
rGrO	Reduced Graphene Oxide
RNA	Ribonucleic Acid
RLC	Resistor-Inductor-Capacitor
RSD	Relative Standard Deviation
SNR	Signal-to-Noise Ratio
SWCNTs	Single Walled Carbon Nanotubes
TEGrO	Thermally Exfoliated Reduced Graphene Oxide
THF	Tetrahydrofuran
TNF-$\alpha$	Tumor Necrosis Factor-alpha
UiO 66	University of Oslo Framework 66
VOC	Volatile Organic Compound
VPP	Vapour Phase Polymerisation
WO3/Au/WO3	Tungsten Trioxide/Gold/Tungsten Trioxide
WSAS	Wireless Self-powered Acetone Sensor
ZIF 8	Zeolitic Imidazolate Framework 8
ZnO	Zinc Oxide