[Determination of theophylline and caffeine in blood serum by thin-layer chromatography-densitometry].
D002110:Caffeine / Q000097:blood*; D002855:Chromatography, Thin Layer / Q000379:methods*; D003720:Densitometry; D005069:Evaluation Studies as Topic; D005260:Female; D005312:Fetal Blood / Q000032:analysis; D006801:Humans; D011247:Pregnancy; D013806:Theophylline / Q000097:blood*
D002110:Caffeine; D013806:Theophylline