Competitive heterogeneous enzyme immunoassay for theophylline by flow-injection analysis with electrochemical detection of p-aminophenol
Keyword(s):
Abstract A competitive enzyme-linked immunoabsorbent assay based on the flow-injection amperometric detection of p-aminophenol has been investigated with use of the materials and general procedure of a commercial kit for the determination of theophylline in human serum. The antibody is immobilized on glass beads, and the enzyme label is alkaline phosphatase (EC 3.1.3.1). The high currents generated during the electrochemical detection allowed a rapid (35 min) and simple determination of theophylline throughout its therapeutic range (10-20 mg/L) and also in the subtherapeutic range (detection limit of about 80 micrograms/L).
1993 ◽
Vol 346
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pp. 859-862
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2009 ◽
Vol 877
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pp. 991-994
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1992 ◽
Vol 342
(1-2)
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pp. 98-102
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Keyword(s):
2015 ◽
Vol 754
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pp. 154-159
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1996 ◽
Vol 356
(3-4)
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pp. 271-273
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2012 ◽
Vol 23
(10)
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pp. 1800-1806
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1997 ◽
Vol 15
(9-10)
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pp. 1515-1519
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Determination of sulphite in wine by flow injection analysis with indirect electrochemical detection
1994 ◽
Vol 349
(6)
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pp. 469-472
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