title: False-negative results from point-of-care qualitative human chorionic gonadotropin (hCG) devices caused by excess hCGbeta core fragment vary with device lot number.
authors.forename: Ann M
authors.initials: AM
authors.lastname: Gronowski
authors.forename: Michelle
authors.initials: M
authors.lastname: Powers
authors.forename: Ulf H
authors.initials: UH
authors.lastname: Stenman
authors.forename: Lori
authors.initials: L
authors.lastname: Ashby
authors.forename: Mitchell G
authors.initials: MG
authors.lastname: Scott
mesh_terms: D000293:Adolescent; D018997:Chorionic Gonadotropin, beta Subunit, Human / Q000592:standards / Q000652:urine*; D004868:Equipment Failure; D005188:False Negative Reactions; D005260:Female; D006801:Humans; D010446:Peptide Fragments / Q000592:standards / Q000652:urine*; D019095:Point-of-Care Systems; D011247:Pregnancy; D011933:Reagent Kits, Diagnostic; D012015:Reference Standards; D055815:Young Adult
chemical_list: D018997:Chorionic Gonadotropin, beta Subunit, Human; D010446:Peptide Fragments; D011933:Reagent Kits, Diagnostic; C063554:urinary gonadotropin fragment