Doctor sending a sample requesting for lecithin spingomyelin ratio what is the sample?
a. Blood.
b. CSF
c. Amniotic fluid.
d. Urine
(c) Amniotic fluid sample is used to measure lecithin: sphingomyelin ratio (L/S). L/S > 2:1 (or 2.5:1) denotes acceptable lung maturity.
