title: Shake test of gastric aspirates: False-negative results due to surfactant binding.
mesh_terms: D005188:False Negative Reactions; D005750:Gastric Juice / Q000032:analysis*; D006801:Humans; D006819:Hyaline Membrane Disease / Q000175:diagnosis*; D007231:Infant, Newborn; D008168:Lung / Q000502:physiology; D010713:Phosphatidylcholines / Q000032:analysis; D011663:Pulmonary Surfactants / Q000032:analysis*
chemical_list: D010713:Phosphatidylcholines; D011663:Pulmonary Surfactants