A Case of a Preterm Infant with 21-Hydroxylase Deficiency: Implications of the Biochemical Diagnosis with Urinary Pregnanetriolone by Gas Chromatography/Mass Spectrometry in Selected Ion Monitoring (GCMS-SIM)
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The biochemical diagnosis of 21-hydroxylase deficiency (21-OHD) is difficult in preterm infants. To date, no marker for the biochemical diagnosis of 21-OHD has been found. Seventeen α-hydroxyprogesterone (17-OHP), is not useful because of interference by delt... ...
