We present a rapid, sensitive and specific high-performance liquid chromatographic method for the analysis of 6-mercaptopurine (6MP), 6-thioguanine nucleotides (6TGN) and 6-thiouric acid (6TU), with excellent chromatographic separation of the thiopurines. Thiopurines in plasma and erythrocytes were extracted by mercuricellulose and re-eluted with β-mercaptoethanol. For quantitative detection a reverse phase column (Lichrosorb RP-18 4 mmx30 cm) and a UV detector were used. Detection limits were 20 nmol/1 for 6MP in plasma, 250 nmol/1 for 6TGN in erythrocytes, and 10 nmol/1 and 15 nmol/1, respectively, for 6MP and 6TU in urine diluted 1:100 with β-mercaptoethanol. Within-run and between-run variations were less than 10%. Recovery of 6MP added to plasma, and 6TGN monophosphate added to haemolysed erythrocytes were 91% and 81%, respectively.
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Original Article
Analysis of 6-mercaptopurine, 6-thioguanine nucleotides, and 6-thiourie acid in biological fluids by high-performance liquid chromatography: Technical Note
I. Bruunshuus Department of Clinical Chemistry, Section of Clinical Haematology and Oncology, University Hospital, Copenhagen, Denmark
& K. Schmiegelow Department of Paediatrics, Section of Clinical Haematology and Oncology, University Hospital, Copenhagen, Denmark
Pages 779-784
Received 24 Oct 1988
Accepted 06 Apr 1989
Published online: 08 Jul 2009
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Original Article
Analysis of 6-mercaptopurine, 6-thioguanine nucleotides, and 6-thiourie acid in biological fluids by high-performance liquid chromatography: Technical Note
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