Kinetic analysis
Measure reaction rates, substrate conversion and time-dependent enzyme behavior.
Assay Kits
Enzyme Activity Assay Kits
Enzyme activity assay kits help researchers measure catalytic function under controlled experimental conditions. These kits usually include optimized substrates, buffers, standards, detection reagents and protocols for monitoring enzymatic turnover, inhibition, activation or kinetic behavior. They are useful in biochemistry, metabolism, signal transduction, drug discovery and pathway research where the question is not only whether an enzyme is present, but whether it is functionally active.
Product catalog
Browse Enzyme Activity Assay Kits
Showing 25 unique product names from this subcategory.
Lactase Activity Assay Kit
SKU: E-BC-K131-S|Size: 50 Assays
Creatine kinase (CK) Activity Assay Kit
SKU: E-BC-K558-S-01|Size: 50 Assays (48 samples)
Cholinesterase (CHE) Activity Assay Kit
SKU: E-BC-K052-S-01|Size: 50 Assays (48 samples)
Neutrophil Elastase (NE) Activity Colorimetric Assay Kit
SKU: E-BC-K899-M-01|Size: 48 T (32 samples)
Aconitase (ACO) Activity Assay Kit
SKU: E-BC-K656-M-01|Size: 48 T (48 samples)
Catalase (CAT) Activity Assay Kit
SKU: E-BC-K031-S-01|Size: 50 Assays (25 samples)
Glyceraldehyde-3-Phosphate Dehydrogenase (GAPDH) Activity Assay Kit
SKU: E-BC-K790-M-01|Size: 48 T (32 samples)
Total Superoxide Dismutase (T-SOD) Activity Assay Kit (Hydroxylamine Method)
SKU: E-BC-K019-S-01|Size: 50 Assays (25 samples)
Microscale ATPase Activity Assay Kit (Red Blood Cells)
SKU: E-BC-K108-S|Size: 100 Assays
NAD-Isocitrate Dehydrogenase (NAD-IDH) Activity Assay Kit
SKU: E-BC-K651-M|Size: 96 T (40 samples)
Malic Dehydrogenase (MDH) Activity Assay Kit (Serum Samples)
SKU: E-BC-K048-S|Size: 50 Assays
Caspase 5 Fluorometric Assay Kit
SKU: 55R-1282|Size: 25 assays
Caspase 10 Fluorometric Assay Kit
SKU: 55R-1284|Size: 25 assays
Neprilysin Activity Assay Kit (Fluorometric)
SKU: K487-100|Size: 100 Assays
Fluorometric Xanthine Oxidase Assay Kit
SKU: K2278-500|Size: 500 Assays
Caspase-3 Colorimetric Assay Kit
SKU: K2008-100|Size: 100 Assays
HDAC Activity Colorimetric Assay Kit
SKU: K2032-96|Size: 96 Tests
Fluorometric Proteasome 20S Activity Assay Kit
SKU: K2242-100|Size: 100 Tests
Caspase-10 Colorimetric Assay Kit
SKU: K2197-100|Size: 100 Assays
Caspase-3 Fluorometric Assay Kit
SKU: K2007-100|Size: 100 Assays
Caspase-9 Colorimetric Assay Kit
SKU: K2019-100|Size: 100 Tests
Caspase-8 Colorimetric Assay Kit
SKU: K2013-200|Size: 200 Assays
Caspase-2 Fluorometric Assay Kit
SKU: K2016-200|Size: 200 Tests
HDAC Activity Fluorometric Assay Kit
SKU: K2031-100|Size: 100 Tests
Caspase-1 Fluorometric Assay Kit
SKU: K2010-25|Size: 25 Assays
Overview
Measure enzyme function, not only enzyme abundance
Unlike expression-based assays, enzyme activity assays focus on functional output. They measure substrate conversion, product formation, cofactor change or signal generation linked to catalytic activity.
A reliable enzyme activity assay should provide low background, predictable signal development and a useful dynamic range. Researchers should consider reaction time, temperature, pH, substrate concentration, sample preparation and inhibitor compatibility.
Applications
Common enzyme activity applications
Inhibitor screening
Compare enzyme activity in the presence of candidate inhibitors or pathway modulators.
Metabolic pathway studies
Study enzyme function in metabolic, oxidative stress, signaling or energy-related pathways.
Protein function validation
Confirm that a purified protein, lysate or biological sample contains functional enzymatic activity.
Selection guide
How to choose enzyme activity assay kits
Select an enzyme activity assay based on the target enzyme, sample type, detection method and expected activity range.
1
Define the enzyme target
Confirm the exact enzyme, isoform or pathway step you want to measure.
2
Match the sample type
Check compatibility with purified enzyme, cell lysate, tissue extract, serum, plasma or culture supernatant.
3
Choose the readout
Compare colorimetric, fluorometric or luminescent detection depending on sensitivity and equipment.
4
Check kinetic suitability
For kinetic experiments, verify whether the kit supports time-course measurements and linear signal development.
5
Review inhibitor compatibility
Make sure solvents, buffers or inhibitor compounds do not interfere with the detection chemistry.
FAQ
Enzyme Activity Assay Kits FAQ
Key questions for selecting enzyme activity kits for functional research.
What does an enzyme activity assay measure?
It measures functional catalytic activity, usually through substrate conversion, product formation or signal change.
Can enzyme activity kits measure kinetics?
Many enzyme activity kits support kinetic measurements, but you should confirm the protocol, reaction timing and detection method.
What is the difference between enzyme amount and enzyme activity?
Enzyme amount indicates how much enzyme is present, while enzyme activity indicates how well it catalyzes a reaction under specific conditions.
Which readout should I choose?
Colorimetric assays are simple and common, fluorometric assays are often more sensitive, and luminescent assays can support high-sensitivity workflows.
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