The Lowry Method for Protein Quantitation

  • Jakob H. Waterborg
Part of the Springer Protocols Handbooks book series (SPH)


The most accurate method of determining protein concentration is probably acid hydrolysis followed by amino acid analysis. Most other methods are sensitive to the amino acid composition of the protein, and absolute concentrations cannot be obtained (1). The procedure of Lowry et al. (2) is no exception, but its sensitivity is moderately constant from protein to protein, and it has been so widely used that Lowry protein estimations are a completely acceptable alternative to a rigorous absolute determination in almost all circumstances in which protein mixtures or crude extracts are involved.


Sodium Dodecyl Sulfate Amino Acid Composition Aromatic Amino Acid Amino Acid Analysis Phosphotungstic Acid 
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Copyright information

© Humana Press Inc., Totowa, NJ 2002

Authors and Affiliations

  • Jakob H. Waterborg
    • 1
  1. 1.Cell Biology & BiophysicsUniversity of Missouri-Kansas CityKansas City

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