期刊
JOURNAL OF CHROMATOGRAPHY A
卷 896, 期 1-2, 页码 183-189出版社
ELSEVIER
DOI: 10.1016/S0021-9673(00)00715-9
关键词
electrochemical detection; detection; LC; homocysteine; amino acids
Homocystinuria, due to a deficiency of cystationine-beta -synthase, refers to the rare inborn error of the metabolism of homocysteine. The identification and prompt treatment of homocystinuria during the neonatal period can prevent or greatly reduce the severity of the clinical consequences. We report a new method for homocystinuria diagnosis from dried blood spots on newborn screening cards, based on high-performance liquid chromatography with electrochemical coulometric array detection. This method shows an excellent linearity (y = 10.3x + 0.04; r = 0.999), precision (RSDs ranged from 2.7 to 5.8%), recovery (87%) and appears to be a cost-effective approach, being simple, rapid, sensitive and cheap. (C) 2000 Elsevier Science B.V. All rights reserved.
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