Measurement of phosphatidyl glycerol in amniotic fluid. Results in clinical practice

A relatively rapid, unidimensional method of measuring phosphatidyl glycerol (PG) in amniotic fluid in order to assess pulmonary maturity was compared with measurement of the lecithin/sphingomyelin (L/S) ratio and the bubble test. Measurement of PG alone gave a higher predictive value (95%) than the L/S ratio while maintaining a low ratio rate of false-positive (2,3%) and false-negative results (3,1%).