title: Diagnostic factors identified in 1020 women with two versus three or more recurrent pregnancy losses.
abstract: OBJECTIVE
  To determine whether the frequency of abnormal results for evidence-based diagnostic tests differed among women with recurrent pregnancy loss (RPL) based on the number of prior losses (n = 2, 3, or > or =4) and to determine whether abnormal results for additional investigative diagnostic tests differed in prevalence among women with different numbers of pregnancy losses.
  
  
  METHODS
  Single-center, retrospective study.
  
  
  METHODS
  Patients with RPL at a private practice.
  
  
  METHODS
  One thousand twenty women who had two or more consecutive spontaneous pregnancy losses with the same partner.
  
  
  METHODS
  None.
  
  
  METHODS
  Frequencies of abnormal results for evidence-based diagnostic tests considered definite or probable causes of RPL (karyotyping for parental chromosomal abnormalities; pelvic sonohysterography, hysterosalpingogram, or hysteroscopy for uterine anomalies; immunological tests for lupus anticoagulant and anticardiolipin antibodies; thrombophilic tests for the factor V Leiden mutation; and blood tests for thyroid-stimulating hormone [TSH] and fasting blood glucose). We also measured the frequency of abnormal results for nine additional investigative tests in the same patients (antiphosphatidyl serine antibodies, microbial infection, midluteal P, PRL, functional protein C activity, functional protein S activity, antithrombin activity, fasting homocysteine and methylenetetrahydrofolate reductase polymorphisms, and factor II mutation).
  
  
  RESULTS
  The prevalence of abnormal results for evidence-based and investigative diagnostic tests did not differ among women with different numbers of pregnancy losses.
  
  
  CONCLUSIONS
  Evaluation of all couples with two, three, or more consecutive miscarriages is recommended.
authors.affiliation: Department of Biology, Rhodes College, University of Tennessee, Memphis, Tennessee, USA.
authors.forename: Carolyn R
authors.initials: CR
authors.lastname: Jaslow
authors.forename: Judi L
authors.initials: JL
authors.lastname: Carney
authors.forename: William H
authors.initials: WH
authors.lastname: Kutteh