title: Evaluation of the DG29 test for early detection of pregnancy in cattle.
abstract: The objective of this study was to evaluate a commercial blood test (DG29) for pregnancy in cattle. Compared with ultrasound, the sensitivity of the assay for detecting pregnancy around day 30 post-insemination was 99.4% [95% confidence interval (CI): 96.1-100]. The specificity was 100% (95% CI: 84.7-100) in non-inseminated cattle, and 66.7%; (95% CI: 49.7-80.4) in inseminated nonpregnant cattle. Positive and negative predictive values were 92.6% and 96.3%, respectively, in a sample of inseminated cattle in which 80% were pregnant.
authors.affiliation: Canadian Food Inspection Agency, Laboratoire de St-Hyacinthe, 3400 boulevard Casavant Ouest, Saint-Hyacinthe, Québec. parejx@inspection.gc.ca
authors.forename: Julie
authors.initials: J
authors.lastname: Paré
authors.forename: Marie-Hélène
authors.initials: MH
authors.lastname: Audet-Grenier
authors.forename: Paul
authors.initials: P
authors.lastname: Rouillier
authors.forename: Marc-André
authors.initials: MA
authors.lastname: Sirard
mesh_terms: D000818:Animals; D002417:Cattle / Q000097:blood / Q000502:physiology*; D003937:Diagnosis, Differential; D005188:False Negative Reactions; D005189:False Positive Reactions; D005260:Female; D011237:Predictive Value of Tests; D011247:Pregnancy; D011270:Pregnancy, Animal / Q000097:blood*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity