Sensitivity of electrospray-tandem mass spectrometry using the phenylalanine/tyrosine-ratio for differential diagnosis of hyperphenylalaninemia in neonates
β Scribed by Andreas Schulze; Dirk Kohlmueller; Ertan Mayatepek
- Book ID
- 117075981
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- English
- Weight
- 175 KB
- Volume
- 283
- Category
- Article
- ISSN
- 0009-8981
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## Abstract A highly sensitive method has been developed for the determination of urinary 7βaminonitrazepam (7βANZP), the major metabolite of nitrazepam, using highβperformance electrospray liquid chromatography tandem mass spectrometry. The samples were prepared for analysis by adding 7βaminoclona