title: Amniotic fluid lecithin-sphingomyelin ratio and other tests for fetal maturity.
mesh_terms: D000653:Amniotic Fluid / Q000032:analysis* / Q000166:cytology; D001724:Birth Weight; D004396:Coloring Agents; D003404:Creatinine / Q000032:analysis; D005260:Female; D005500:Follow-Up Studies; D005865:Gestational Age; D006801:Humans; D007231:Infant, Newborn; D008722:Methods; D009994:Osmolar Concentration; D010713:Phosphatidylcholines / Q000032:analysis*; D011247:Pregnancy; D012127:Respiratory Distress Syndrome, Newborn / Q000175:diagnosis; D013109:Sphingomyelins / Q000032:analysis*; D013194:Staining and Labeling
chemical_list: D004396:Coloring Agents; D010713:Phosphatidylcholines; D013109:Sphingomyelins; D003404:Creatinine