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  • Title: [Development and comparison of lecithin/sphingomyelin and palmitic acid/stearic acid ratios in amniotic fluid].
    Author: Lavoinne A, Loraillere P, Maitrot B, Duval C, Lemoine JP, Gray H.
    Journal: Clin Chim Acta; 1980 Mar 28; 102(2-3):207-14. PubMed ID: 7371188.
    Abstract:
    Fetal lung maturity has been studied both by silica gel chromatography of phospholipids and gas liquid chromatography of fatty acids. Lecithin/sphingomyelin (L/S) ratios and palmitic/stearic (P/S) ratios were compared. A good correlation was obtained. However, when the L/S ratio has an intermediate value (1.5 less than or equal to L/S less than 2) making it difficult to judge the fetal lung maturity, the P/S ratio expresses the lung maturity more accurately.
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