Positive correlation of optical density at 650 nm. with lecithin/sphingomyelin ratios in amniotic fluid.
In this study, we have attempted to correlate optical density measurements of amniotic fluids with L/S ratios. We may conclude, with over a 98 per cent accuracy, that fluids having optical density readings of 0.15 and above, at 650 nm. will have an L/S ratio over 2.0. Fluids having optical density readings up to 0.05 will have L/S ratios of about 1.3. Finally, amniotic fluids having optical densities greater than 0.05 and less than 0.15 will have L/S ratios of approximately 1.5.
D000653:Amniotic Fluid / Q000032:analysis*; D005260:Female; D006801:Humans; D008168:Lung / Q000196:embryology; D010713:Phosphatidylcholines / Q000032:analysis*; D011247:Pregnancy; D013057:Spectrum Analysis; D013109:Sphingomyelins / Q000032:analysis*
D010713:Phosphatidylcholines; D013109:Sphingomyelins