Total protein quantification
Measure total protein concentration in lysates, extracts, purified proteins or biological samples.
Assay Kits
Protein Assay Kits
Protein assay kits are used to measure protein concentration, normalize samples and support downstream workflows such as western blotting, ELISA, enzyme assays, purification, cell biology and biochemistry research. They provide standardized reagents, standards and detection systems for estimating total protein or specific protein-related signals. A reliable protein assay helps researchers compare samples fairly, prepare consistent loading amounts and reduce variability across experiments.
Product catalog
Browse Protein Assay Kits
Showing 25 unique product names from this subcategory.
Better BCA Protein Assay Kit (Reducing agent compatible)
SKU: SK3051|Size: 500Assays, 500preps
Lowry Protein Assay Kit
SKU: SK4031|Size: 1000Assays, 1000preps
BCA Protein Assay Kit
SKU: SK3021|Size: 500Assays, 500preps
Flag-tag Protein IP Assay Kit (Magnetic Beads)
SKU: K4627-10|Size: 10 Tests
ChIP Assay Kit (Protein A+G Agarose)
SKU: K4625-22|Size: 22 Tests
Bradford Protein Assay Kit
SKU: K4103-1000|Size: 1000 Tests
Protein Assay Kit Kit
SKU: TBS2005|Size: 1000 Tests
JBScreen Thermofluor SPECIFIC Thermal Shift Assay for protein stability
SKU: CS-333|Size: 93 Solutions
Total Protein Assay Kit (With standard, BCA method)
SKU: MBS2548451-01|Size: 96 Tests
The total protein Assay Kit (with standard : BCA method)
SKU: SH0292-1|Size: 48 Tests
BCA Protein Assay Kit II
SKU: K813-5000|Size: 5000 Assays
EZClick™ Myristoylated Protein Assay Kit, Red Fluorescence
SKU: K177-100|Size: 100 Assays
EZClick™ Global Protein Synthesis Assay Kit (FACS/Microscopy), Red Fluorescence
SKU: K715-100|Size: 100 Assays
EZClick™ Palmitoylated Protein Assay Kit (FACS/Microscopy), Red Fluorescence
SKU: K416-100|Size: 100 Assays
Protein Quantification Kit (Bradford Assay)
SKU: MBS9711522-01|Size: 500 Tests
Assay Buffer and Co-factors: Protein MetalloPhosphatase Buffer (10X)
SKU: MBS518004-01|Size: 1 mL
Protein Quantification Kit (BCA Assay)
SKU: MBS9711521-01|Size: 500 Tests
C1q And Tumor Necrosis Factor Related Protein 3 (C1QTNF3) Magnetic Fluorescence Assay Kit
SKU: MBS2161258-01|Size: 96 Tests
DNA Repair Protein RAD50 (RAD50) Magnetic Fluorescence Assay Kit
SKU: MBS2161246-01|Size: 96 Tests
Fas Associating Death Domain Containing Protein (FADD) Magnetic Fluorescence Assay Kit
SKU: MBS2161241-01|Size: 96 Tests
Ring1 And YY1 Binding Protein (RYBP) Magnetic Fluorescence Assay Kit
SKU: MBS2161234-01|Size: 96 Tests
NANOG Homeobox Protein (NANOG) Magnetic Fluorescence Assay Kit
SKU: MBS2161227-01|Size: 96 Tests
Non Imprinted In Prader Willi/Angelman Syndrome Region Protein 1 (NIPA1) Magnetic Fluorescence Assay Kit
SKU: MBS2161224-01|Size: 96 Tests
Ras Association Domain Containing Protein 1 (RASSF1) Magnetic Fluorescence Assay Kit
SKU: MBS2161220-01|Size: 96 Tests
Coiled Coil Domain Containing Protein 80 (CCDC80) Magnetic Fluorescence Assay Kit
SKU: MBS2161219-01|Size: 96 Tests
Overview
Quantify proteins for consistent downstream experiments
Protein quantification is a routine but critical step in many laboratory workflows. Without accurate normalization, differences in western blot bands, enzyme activity or assay signals may reflect unequal loading rather than real biological variation.
Protein assay selection depends on sensitivity, sample buffer, detergent compatibility, reducing agents, detection platform and expected concentration range. Researchers should check whether the assay chemistry is compatible with their extraction buffer.
Applications
Common protein assay applications
Sample normalization
Prepare equal protein loading for western blotting, ELISA, enzyme assays or proteomics workflows.
Purification monitoring
Track protein recovery during purification, concentration or buffer exchange workflows.
Biochemistry research
Support experiments where protein concentration affects reaction performance or interpretation.
Selection guide
How to choose protein assay kits
Select a protein assay according to sensitivity, buffer compatibility and downstream workflow.
1
Check concentration range
Choose a kit with a working range that fits your expected protein concentration.
2
Review buffer compatibility
Detergents, reducing agents, chelators and salts may interfere with some protein assay chemistries.
3
Choose the detection method
Colorimetric assays are common and simple, while fluorescent methods may offer higher sensitivity.
4
Use proper standards
Prepare standards carefully and choose a standard protein appropriate for your workflow when possible.
5
Match downstream use
Consider whether the result will be used for western blot loading, enzyme activity, purification or normalization.
FAQ
Protein Assay Kits FAQ
Frequently asked questions about protein quantification kits.
What are protein assay kits used for?
They are used to measure protein concentration and normalize samples before downstream experiments.
Why is buffer compatibility important?
Some detergents, reducing agents or salts can interfere with assay chemistry and distort protein measurements.
Which protein assay method should I choose?
Choose based on sensitivity, compatibility with your buffer, instrument availability and expected concentration range.
Why do I need a standard curve?
A standard curve converts signal intensity into concentration and helps verify that samples fall within the assay range.
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