Abstract：
:We describe an assay for measuring cocaine and benzoylecgonine in meconium of infants born to mothers suspected of using cocaine during their pregnancy. The assay involves the use of fluorescence polarization immunoassay (FPIA) to screen for benzoylecgonine in a methanolic extract of the meconium. The FPIA is sensitive to 0.6 microgram benzoylecgonine per gram meconium. Confirmation of the presence (or absence) of benzoylecgonine and cocaine in meconium samples was performed by solid phase extraction of a second methanolic extract of the meconium, derivatizing using BSTFA, followed by a gas chromatographic/mass spectrometric (GC/MS) analysis, which can detect both cocaine and benzoylecgonine. The GC/MS confirmation was sensitive to less than 0.25 microgram cocaine or 0.5 microgram benzoylecgonine per gram meconium. FPIA, which is commonly used in many toxicology laboratories, is advantageous because it precludes the need to use radioimmunoassays for the initial screen. The confirmation step provides greater certainty for the presence of cocaine and/or benzoylecgonine in meconium.
journal_name
J Anal Toxicoljournal_title
Journal of analytical toxicologyauthors
Clark GD,Rosenzweig IB,Raisys V,Callahan CM,Grant TM,Streissguth APdoi
10.1093/jat/16.4.261keywords:
subject
Has Abstractpub_date
1992-07-01 00:00:00pages
261-3issue
4eissn
0146-4760issn
1945-2403journal_volume
16pub_type
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