title: Lidocaine interference in lecithin/sphingomyelin ratios.
mesh_terms: D000328:Adult; D000653:Amniotic Fluid / Q000032:analysis*; D055598:Chemical Phenomena; D002621:Chemistry; D005260:Female; D006801:Humans; D008012:Lidocaine; D010713:Phosphatidylcholines / Q000032:analysis*; D011247:Pregnancy; D013109:Sphingomyelins / Q000032:analysis*
chemical_list: D010713:Phosphatidylcholines; D013109:Sphingomyelins; D008012:Lidocaine