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LS

   Also found in: Dictionary/thesaurus, Financial, Acronyms, Encyclopedia, Wikipedia, Hutchinson 0.02 sec.
lecithin/sphingomyelin (LS) ratio,
the ratio of two components of amniotic fluid, used for predicting fetal lung maturity. The normal ratio in amniotic fluid is 2:1 or greater when fetal lungs are mature.
LS,
adj lumbosacral; relates to a structure within the lumbar and sacral regions of the body, such as the lumbosacral joint.


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