FETAL LUNG MATURITY
Thin-layer chromatography; ratio ≥ 2.0 = mature lungs
Lecithin Sphingomyelin LS ratio
FETAL LUNG MATURITY
Immunoassay or chromatography
Phosphatidylglycerol (PG) detection
FETAL LUNG MATURITY
Surfactant lowers surface tension; persistent foam = mature
Foam Stability Index (Shake Test)
FETAL LUNG MATURITY
Automated hematology analyzer platelet channel; count surfactant granules
Lamellar Body Count
FETAL LUNG MATURITY
Predicts risk of neonatal Respiratory Distress
Syndrome (RDS)
Lecithin/Sphingomyelin (L/S) ratio
FETAL LUNG MATURITY
Confirms lung maturity; reliable in diabetic mothers
Phosphatidylglycerol (PG) detection
FETAL LUNG MATURITY
Rapid screening test for FLM
Foam Stability Index (Shake Test)
FETAL LUNG MATURITY
more or equal 50,000/uL - fetal lung maturity
Lamellar Body Count
HEMOLYTIC DISEASE OF THE NEWBORN
Spectrophotometry at 450 nm; plotted on
Liley’s chart
Bilirubin measurement (AOD450)
HEMOLYTIC DISEASE OF THE NEWBORN
Monitors severity of hemolysis due to Rh incompatibility
Bilirubin measurement (AOD450)