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An isocratic UV HPLC assay for analysis of total and free melphalan concentrations in human plasma

Identyfikatory
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
A simple isocratic HPLC-UV assay for measurement of total and free melphalan concentrations in human plasma is described. Samples were prepared by methanol precipitation (total melphalan assay) and ultrafiltration (free melphalan assay). On a 25 cm × 4.6 mm C column with 0.016 M mixed soldium phosphate citrate buffer (pH 3.75)-acetonitrile 87:13 as mobile phase, at a flow rate of 1 mL min -1, the retention time of melphalan was 11.5 min. Detection was at 254 nm. For total melphalan assay response was a linear function of concentration up to 40 µg mL -1, with excellent interday precision (<6% for 0.5-40 µg mL -1 melphalan), accuracy (<2% deviation from the true concentration), and recovery (91-110%). For free melphalan assay response was a linear function of concentration up to 2.5 ?g mL -1, with good precision (<11% for 0.7-2.5 µg mL -1 melphalan) and recovery (89-93%). Detection limits were 0.1 µg mL -1 and 0.05 µg mL -1 for total and free melphalan assays, respectively. The assays were clinically applied in a study of myeloma patients.
Słowa kluczowe
Rocznik
Strony
383--398
Opis fizyczny
Bibliogr. 24 poz., rys., tab.
Twórcy
autor
autor
autor
autor
autor
  • The Children's Hospital at Westmead Department of Biochemistry Hawkesbury Rd Westmead NSW 2145 Australia Locked Bag 4001 Westmead NSW 2145 Australia The Children's Hospital at Westmead Department of Oncology Hawkesbury Rd Westmead NSW 2145 Australia Con, christan@chw.edu.au
Bibliografia
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Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BATE-0001-0030
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