lecithin-sphingomyelin ratio

Medical Dictionary

lecithin-sphingomyelin ratio n.
The ratio of lecithin to sphingomyelin present in amniotic fluid, used to determine fetal pulmonary maturity.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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