title: Adsorption of pregnanediol-3 alpha-glucuronide by plastics and glass.
abstract: Radioactive pregnanediol-3 alpha-glucuronide at low concentration was found to bind to a number of common laboratory materials. Adsorption was greatest with polypropylene and unsilanised glass tubes. The presence of 0.1% gelatine reduced adsorption, except in polyethylene insert vials. Adsorption of pregnanediol-3 alpha-glucuronide may present a problem in radioimmunoassay studies.
mesh_terms: D000327:Adsorption; D005898:Glass; D010969:Plastics; D011276:Pregnanediol / Q000031:analogs & derivatives* / Q000032:analysis; D011863:Radioimmunoassay / Q000379:methods; D014316:Tritium
chemical_list: D010969:Plastics; D014316:Tritium; C022270:pregnanediol-3 alpha-glucuronide; D011276:Pregnanediol