title: Salivary estradiol and progesterone levels in conception and nonconception cycles in women: evaluation of a new assay for salivary estradiol.
abstract: OBJECTIVE
  To determine the usefulness of salivary E2 and progesterone for noninvasive assessment of ovarian function.
  
  
  METHODS
  Prospective study of salivary hormone levels in women planning a pregnancy.
  
  
  METHODS
  Department of Obstetrics and Gynecology at Northwestern University Medical School in Chicago, Illinois.
  
  
  METHODS
  Fourteen women aged 23-39 years with regular menstrual cycles who were planning a pregnancy.
  
  
  METHODS
  None.
  
  
  METHODS
  Salivary estradiol and progesterone concentrations.
  
  
  RESULTS
  The sensitivity of the E2 assay is 2.0 pmol/L; the interassay coefficient of variation was 5.2% (mean value 17 pmol/L). Recovery of E2 added to saliva was 106%. The correlation with simultaneous serum samples was 0.71. Menstrual cycle patterns contained a preovulatory depression and a midcycle surge. By comparison with nonconception cycles, the luteal phases of conception cycles had significantly elevated salivary E2 within the first 5 days after ovulation. Salivary progesterone was significantly elevated but not until 10 days after ovulation.
  
  
  CONCLUSIONS
  Salivary measurements of E2 and progesterone can be used as noninvasive methods for assessment of ovarian function. Salivary specimens can be collected at home and brought to the laboratory for analysis, obviating the need for frequent phlebotomy. The sensitivity and precision of the salivary E2 assay make it comparable with assays of serum E2 for assessing changes in hormone levels.
authors.affiliation: Department of Obstetrics and Gynecology, Northwestern University Medical School, Chicago, Illinois 60611, USA.
authors.forename: Y
authors.initials: Y
authors.lastname: Lu
authors.forename: G R
authors.initials: GR
authors.lastname: Bentley
authors.forename: P H
authors.initials: PH
authors.lastname: Gann
authors.forename: K R
authors.initials: KR
authors.lastname: Hodges
authors.forename: R T
authors.initials: RT
authors.lastname: Chatterton
mesh_terms: D000328:Adult; D004958:Estradiol / Q000378:metabolism*; D005260:Female; D005306:Fertilization / Q000502:physiology*; D006801:Humans; D007118:Immunoassay; D008297:Male; D008597:Menstrual Cycle / Q000378:metabolism*; D011237:Predictive Value of Tests; D011247:Pregnancy; D011374:Progesterone / Q000378:metabolism*; D012463:Saliva / Q000378:metabolism*; D012680:Sensitivity and Specificity
chemical_list: D011374:Progesterone; D004958:Estradiol