Urine protein concentration estimation for biomarker discoveryTools Mistry, Hiten D., Bramham, Kate, Weston, Andrew, Ward, Malcolm, Thompson, Andrew and Chappell, Lucy C. (2013) Urine protein concentration estimation for biomarker discovery. Pregnancy Hypertension, 3 (4). pp. 211-214. ISSN 2210-7797 Full text not available from this repository.AbstractRecent advances have been made in the study of urinary proteomics as a diagnostic tool for renal disease and pre-eclampsia which requires accurate measurement of urinary protein. We compared different protein assays (Bicinchoninic acid (BCA), Lowry and Bradford) against the ‘gold standard’ amino-acid assay in urine from 43 women (8 non-pregnant, 34 pregnant, including 8 with pre-eclampsia. BCA assay was superior to both Lowry and Bradford assays (Bland Altman bias: 0.08) compared to amino-acid assay, which performed particularly poorly at higher protein concentrations. These data highlight the need to use amino-acid or BCA assays for unprocessed urine protein estimation.
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