CFR > Title 21 - Food and Drugs > CHAPTER I—FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES > SUBCHAPTER H—MEDICAL DEVICES (parts 800 to 898) > PART 862—CLINICAL CHEMISTRY AND CLINICAL TOXICOLOGY DEVICES > SUBPART B—Clinical Chemistry Test Systems (§862.1020 to §862.1825) > 862.1455—Lecithin/sphingomyelin ratio in amniotic fluid test system.

862.1455—Lecithin/sphingomyelin ratio in amniotic fluid test system.

(a) Identification. A lecithin/sphingomyelin ratio in amniotic fluid test system is a device intended to measure the lecithin/sphingomyelin ratio in amniotic fluid. Lecithin and sphingomyelin are phospholipids (fats or fat-like substances containing phosphorus). Measurements of the lecithin/sphingomyelin ratio in amniotic fluid are used in evaluating fetal maturity.
(b) Classification. Class II.