Protein Quantification Assays

Protein assays, most notably quantitation or estimation assays, for determining protein concentration are one of the most widely used methods in life science research. Protein estimation of protein concentration is necessary in protein purification, electrophoresis, cell biology, molecular biology, and other research applications. We offer a unique selection of protein estimation assays that are improvements on the Biuret, Lowry, BCA and Bradford assays.  Each assay has its own benefits, however the NI™ (Non-Interfering™) Protein Assay and CB X™ Protein Assay overcome all interfering agents.

Although there are a wide variety of protein assays available, none of the assays can be used without first considering their suitability for the application. Each method has its own advantages and limitations and often it is necessary to obtain more than one type of protein assay for research applications.For additional information on protein assays, read the Protein Assays Handbook & Selection Guide.

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Assay Tubes

Wide bottomed protein assay tubes, 2ml reaction volumes. Allows proper mixing of assay reaction and good color development...

Bicinchoninic Acid (BCA) Reducing Agent Compatible Protein Assay

The Bicinchoninic Acid (BCA) Protein Assay is a highly sensitive colorimetric assay that is compatible with detergent solubilized protein solutions, however is dramatically affected by the presence of..

Micro Bicinchoninic Acid (BCA) Protein Assay

The Micro Bicinchoninic Acid (BCA) Protein Assay is a highly sensitive colorimetric assay that is compatible with detergent solubilized protein solutions. This modification of the Bicinchoninic Acid (..

Neutralizer™

The Neutralizer™ is a unique chemical that sequesters ionic detergents, including SDS, allow the solution to be compatible with the RED 660 Protein Assay.  The Neutralizer™ can also b..

Non Animal Protein Standards

G-Biosciences Non Animal Protein Standards are protein standards for use in protein estimations that are generated from non-animal proteins.   The prediluted Non Animal Protein Standards are re..

PhosphoQuant™

PhosphoQuant™ is specifically designed for quick and reliable determination of whether a purified protein is phosphorylated and the extent of phosphorylation. The assay is based on the alkaline hydrol..

Protein dotMETRIC™ Assay

Rapidly, mix 1µl protein sample with the supplied Dilution Buffer and apply 1µl of the solution to the test strip by point-of-contact capillary action. Under the assay's specific buffer co..

Protn-Latex™

Protn-Latex™ is a simple and reliable method for estimation of protein contamination in latex. Protein estimation can be performed either on the production site or in any laboratory with a minim..

Assay Cuvettes

Spectrophotometer assay cuvettes, 1ml reaction volume, not suitable for UV absorbances. Available as 1 box of 100 cuvettes or a pack of 5 x 100 cuvettes. ..

Bicinchoninic Acid (BCA) Protein Assay

The Bicinchoninic Acid (BCA) Protein Assay, also known as the Smith Assay, is a highly sensitive colorimetric assay that is compatible with detergent solubilized protein solutions.   The Bi..

Bovine γ-Globulin Standards

We offer two opitions for the Bovine γ-globulin standards:   Bovine γ-Globulin Standard γ-Globulin standard (2mg/ml) prepared in saline buffer. Supplied as 2 x 5ml size...

Bovine Serum Albumin Standards

We offer two options for the BSA protein standards:   Bovine Serum Albumin Standard BSA standard (2mg/ml) prepared in saline buffer. Supplied as 2 x 5ml size.     Predil..