Comparison of the TDx-FLM II and lecithin to sphingomyelin ratio assays in predicting fetal lung maturity

The TDx-FLM II and L/S ratios are both sensitive tests for RDS; however, there is not good concordance between the two. The results provide new insight into the optimal use, in sequential or reflex cascade testing, of the TDx-FLM II and L/S ratio.