title: [Early diagnostic accuracy of the O'Sullivan test in gestational diabetes].
abstract: OBJECTIVE
  to assess the specificity and sensibility of the O'Sullivan test for gestational diabetes in early pregnancy.
  
  
  METHODS
  a pilot study in 50 women with low-risk of pregnancy, without history of alteration of glucose was done. The O'Sullivan test consisted in the administration of 50 g of glucose; glycemia was measured 60 minutes after, between weeks 14 and 23 and between weeks 24 and 28 of pregnancy. Value was considered positive with a glycemia = 140 mg/dL. We calculated sensitivity, specificity and predictive values.
  
  
  RESULTS
  O'Sullivan test performed between weeks 14 and 23 was positive in three pregnant women (6 %), and between weeks 24 and 28, in four (8 %); there was no statistical difference in both measurements (p > 0.05). The sensitivity was 75 % (95 %, CI 30.1 % to 95.4 %), and the specificity 100.0 % (95 %, CI 92.3 % to 100 %).
  
  
  CONCLUSIONS
  the O'Sullivan test performed between weeks 14 and 23 of gestation showed good sensitivity and specificity in the diagnosis of early gestational pregnancy.
authors.affiliation: Unidad de Medicina Familiar 61, Instituto Mexicano del Seguro Social, Veracruz, Veracruz, México. soniairmar@hotmail.com.
authors.forename: Sonia Irma
authors.initials: SI
authors.lastname: Rojas-Carrera
authors.forename: Félix Guillermo
authors.initials: FG
authors.lastname: Márquez-Celedonio
authors.forename: Adrián
authors.initials: A
authors.lastname: Lagunes-Mijangos
authors.forename: Víctor Manuel
authors.initials: VM
authors.lastname: González-Arriola
mesh_terms: D001786:Blood Glucose / Q000032:analysis; D016640:Diabetes, Gestational / Q000097:blood / Q000175:diagnosis*; D005260:Female; D006403:Hematologic Tests; D006801:Humans; D010865:Pilot Projects; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D011262:Pregnancy Trimester, Second; D012680:Sensitivity and Specificity; D055815:Young Adult
chemical_list: D001786:Blood Glucose
keywords: diabetes; diagnosis; gestational pregnancy