Sulfamethoxazole interferes with liquid-chromatographic analysis for theophylline in serum.
D002851:Chromatography, High Pressure Liquid / Q000379:methods; D006801:Humans; D013420:Sulfamethoxazole / Q000097:blood*; D013806:Theophylline / Q000097:blood*
D013806:Theophylline; D013420:Sulfamethoxazole