Cell functional analysis encompasses a comprehensive suite of methodologies for investigating how cells respond to their environment, interact with other cells, and execute critical biological processes. These assays are fundamental to understanding disease mechanisms, drug responses, and cellular homeostasis across diverse research applications including cancer biology, immunology, neuroscience, and toxicology. AAT Bioquest offers an extensive portfolio of fluorescent probes, assay kits, and detection reagents designed to monitor cellular processes through flow cytometry, fluorescence microscopy, and high-throughput microplate-based platforms.
Featured Product Lines
Cell Meter™ — Comprehensive assay kits for apoptosis, viability, cell cycle analysis and more
Live or Dead™ — Dual-color viability kits for rapid discrimination of live and dead cell populations
Amplite® — Diverse kits for cell lysate and solution-based assays of biomolecules and enzyme activities
Apoptosis, necrosis and cell death detection tools enable researchers to identify and quantify different modes of cell death through multiple mechanistic markers. Our comprehensive portfolio covers every stage of the apoptotic cascade, from early phosphatidylserine exposure to late-stage DNA fragmentation.
Annexin V conjugates in iFluor®, mFluor™, XFD, and classic fluorophore formats for detecting early apoptotic PS exposure
Cell Meter™ Annexin V Binding and Phosphatidylserine Apoptosis Assay Kits optimized for flow cytometry and microplate readers
Caspase 3/7, 8, and 9 activity detection kits with fluorescent and binding-based readouts
TUNEL assay kits for detecting late-stage DNA fragmentation in fixed cells, tissues, and live cells
Mitochondrial membrane potential assay kits including JC-10 and NIR probes
Multiplexing kits for simultaneous classification of live, apoptotic, and necrotic cells
Cell Viability and Proliferation
Cell viability and proliferation assays provide essential tools for measuring cell health, metabolic activity, and division rates. These assays are fundamental to drug screening, cytotoxicity testing, and growth factor studies.
Calcein AM and esterase-based probes including Calcein UltraGreen™ for live cell confirmation
Colorimetric viability assays including MTT, MTS, WST-8, and Cell Counting Kit-8 (CCK-8) for high-throughput screening
Cell proliferation tracking dyes such as CFSE and CytoTell™ for generation analysis by flow cytometry
Bucculite™ EdU and BrdU incorporation kits for S-phase detection by imaging and flow cytometry
Fixable viability dyes compatible with fixation and intracellular staining protocols
Live/Dead dual staining kits and Cell Explorer™ labeling kits for multiparameter cell health assessment
Cell Cycle Analysis
Cell cycle analysis tools enable determination of cell cycle phase distribution and identification of cells actively synthesizing DNA. These reagents are critical for studying cell division, checkpoint regulation, and the effects of anti-proliferative compounds.
DNA content dyes including propidium iodide and nuclear stains for G0/G1, S, and G2/M discrimination
Bucculite™ EdU incorporation kits for specific S-phase labeling without DNA denaturation
Compatible with multiparameter analysis alongside viability and apoptosis markers
Cell Senescence
Cell senescence detection reagents identify permanently growth-arrested cells through senescence-associated markers. Cellular senescence plays key roles in aging, tumor suppression, and tissue remodeling.
Cell Meter™ SA-β-galactosidase assay kits for fluorescent and colorimetric detection
Optimized for both microscopy-based imaging and flow cytometric analysis
Suitable for studying replicative senescence, oncogene-induced senescence, and therapy-induced senescence
Autophagy and Mitophagy
Autophagy and mitophagy detection tools monitor the cellular self-degradation pathways that recycle damaged organelles and proteins. These processes are implicated in neurodegeneration, cancer, and metabolic disease.
Cell Meter™ autophagy assay kits for tracking autophagosome formation and autophagic flux
Mitophagy-specific indicators for studying mitochondrial quality control
Compatible with live cell imaging and flow cytometry platforms
ADME, P450 and Cytotoxicity
ADME, P450 and cytotoxicity assays support drug metabolism and toxicology research by measuring cytochrome P450 enzyme activities, drug-drug interactions, and compound-induced cellular damage.
Amplite® CYP450 activity assay kits for major metabolic isoforms (CYP1A2, CYP2C9, CYP2D6, CYP3A4, and others)
Fluorogenic and luminogenic substrates for high-throughput screening
Cytotoxicity detection reagents for evaluating compound safety profiles
Compatible with hepatocyte cultures and recombinant enzyme systems
pH-sensitive fluorescent indicators for tracking endosomal and phagolysosomal processing
Fluorescent particles and bioparticles for quantifying phagocytic activity
Suitable for macrophage, dendritic cell, and neutrophil functional studies
Reactive Oxygen Signaling Species (ROS)
ROS detection probes measure oxidative stress markers including superoxide, hydrogen peroxide, hydroxyl radicals, and lipid peroxidation products. Oxidative stress assessment is central to understanding inflammation, neurodegeneration, and cardiovascular disease.
Amplite® ROS assay kits for quantitative microplate-based detection
OxiVision™ probes for live cell imaging of specific reactive oxygen species
Cell Meter™ intracellular H₂O₂ assay kits optimized for flow cytometry
Lipid peroxidation sensors including OxiVision™ for ferroptosis and membrane oxidation research
Cell Signaling Probes
Cell signaling probes enable detection and visualization of second messengers, gasotransmitters, and receptor signaling pathways that regulate cellular responses to stimuli.
Cyclic nucleotide second messengers (cGAMP, cAMP) and IP1 derivatives for GPCR pathway studies
Fluorescent sensors for gasotransmitters including nitric oxide (DAX-J2™) and hydrogen sulfide (Sulfide Green™)
GPCR signaling tools including beta-arrestin translocation assays and receptor-specific ligand derivatives
Bacterial second messenger probes (c-di-GMP) for biofilm and virulence research
This document (01.0223.251203r1) was last updated on Sat Feb 28 2026. All trademarks and registered trademarks mentioned herein are the property of their respective owners.