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6. Background hCG in non-pregnant individuals: need for more sensitive point-of-care and over-the-counter pregnancy tests. Cole LA; Ladner DG Clin Biochem; 2009 Feb; 42(3):168-75. PubMed ID: 18929550 [TBL] [Abstract][Full Text] [Related]
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16. Blood or urine measurement of human chorionic gonadotropin for detection of ectopic pregnancy? A comparative study of quantitative and qualitative methods in both fluids. Norman RJ; Buck RH; Rom L; Joubert SM Obstet Gynecol; 1988 Mar; 71(3 Pt 1):315-8. PubMed ID: 3347413 [TBL] [Abstract][Full Text] [Related]
17. Performances of urine pregnancy tests on College of American Pathologists Survey specimens. Biesecker JL; Rippey JH Am J Clin Pathol; 1981 Oct; 76(4 Suppl):544-6. PubMed ID: 7282640 [TBL] [Abstract][Full Text] [Related]
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19. Interference of exogenous HCG on pregnancy tests. Noci I; Saltarelli O; Coccia E; Messo A; Livi C; Massi GB; Messeri G Acta Eur Fertil; 1987; 18(6):391-3. PubMed ID: 3454503 [TBL] [Abstract][Full Text] [Related]
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