A simple colorimetric assay to determine the concentration and proportion of human mercaptalbumin.
Pract Lab Med 2022;
31:e00281. [PMID:
35711386 PMCID:
PMC9192801 DOI:
10.1016/j.plabm.2022.e00281]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 04/26/2022] [Accepted: 05/16/2022] [Indexed: 12/13/2022] Open
Abstract
Objectives
Design and methods
Results
Conclusions
Concentrations of the reduced form of human serum albumin (human mercaptalbumin) were measured by a colorimetric assay using Michler's Hydrol.
The assay uses the total thiol concentration to approximate the human mercaptalbumin concentration.
Accuracy was improved by alkylating part of the samples and canceling the contribution of the non-thiol component to the colorimetric changes.
Combining Michler's Hydrol assay with bromocresol purple assay enabled us to obtain the proportions of mercaptalbumin and non-mercaptalbumin, which correlated with HPLC as a reference method.
Collapse