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  • Title: Correlations of pseudouridine in 8-hour and 24-hour urinary samples determined by high-performance liquid chromatography.
    Author: Sjølin KE.
    Journal: Urol Res; 1982; 10(5):245-8. PubMed ID: 7164220.
    Abstract:
    The correlations of Pseudouridine (psi) values in 8 h and 24 h urinary samples from 23 healthy persons were determined. Pseudouridine in the 8 h urinary samples was measured by high-performance liquid chromatography and the 24 h excretion was calculated from the results of three 8 h determinations. Simultaneous determinations of urinary creatinine were performed by Jaffe's reaction. Based on the 8 h values of urinary Pseudouridine the results demonstrated a constant excretion of Pseudouridine in the 24 h periods, if the values were related to the urinary creatinine. The precision in using this ratio as an indicator for normal 24 h excretion of Pseudouridine was 90.5% for males and 92.5% for females.
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