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  • Title: Effect of serum pH on bilirubin-protein binding.
    Author: Yeung CY, Lee FT, Wong HN.
    Journal: Acta Paediatr Jpn; 1992 Feb; 34(1):23-7. PubMed ID: 1580149.
    Abstract:
    Progressive increase of the serum pH upon standing and storage in different conditions is documented. Bilirubin albumin titration studies were performed on serum of different pH by Sephadex gel filtration and horseradish peroxidase oxidation methods. Results showed that different pH produced different titration curves and that more reproducible and consistent results were obtained with the peroxidase oxidation titration method. Addition of HCl and CO2 to the serum also produced different bilirubin-protein titration results. For bilirubin albumin binding studies, we suggest to adjust the pH to 7.4 with CO2 to obtain clinically meaningful data.
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