No abstract available
MeSH terms
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Calcium Channel Blockers / urine*
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Chromatography, High Pressure Liquid
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Cross Reactions
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False Positive Reactions
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Gas Chromatography-Mass Spectrometry
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Humans
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Immunoenzyme Techniques
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Methadone / urine*
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Narcotics / urine*
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Reagent Kits, Diagnostic
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Substance Abuse Detection / methods*
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Verapamil / urine*
Substances
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Calcium Channel Blockers
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Narcotics
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Reagent Kits, Diagnostic
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Verapamil
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Methadone