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lecithin/sphingomyelin ratio (LS ratio)
Indications:
- impending premature delivery
- one of several methods to determine of fetal lung maturity
Reference interval:
- < 2.0 = immature lungs
Specimen:
- amniotic fluid
Methods:
- thin-layer chromatography
Related
phosphatidylcholine (lecithin)
sphingomyelin
General
fetal lung maturity assessment
References
- Interpretation of Diagnostic tests, 8th edition, Wallach J,
Lippincott, Williams & Wilkens, Philadelphia, 2007
- Lecithin-Sphingomyelin Ratio
Laboratory Test Directory ARUP: 80200