title: Serum follicle stimulating hormone and estradiol in peri/postmenopausal women attending Siriraj Menopause Clinic: a retrospective study.
abstract: OBJECTIVE
  To determine serum levels of Follicle Stimulating Hormone (FSH) and Estradiol (E) in peri/postmenopausal women attending the menopause clinic.
  
  
  METHODS
  Retrospective descriptive study.
  
  
  METHODS
  Siriraj Menopause Clinic, Gynecologic Endocrinology Unit, Division of Reproductive Medicine, Department of Obstetrics and Gynecology, Faculty of Medicine Siriraj Hospital.
  
  
  METHODS
  Peri/postmenopausal women attending Siriraj Menopause Clinic from January 1994 to December 2003.
  
  
  METHODS
  Medical records of women who had a blood test for FSH and/or E2 prior to hormonal therapy were reviewed.
  
  
  RESULTS
  During a 10 year period, there were 116 eligible patients who could be classified into perimenopausal (31 cases), natural postmenopausal (43 cases), and surgical postmenopausal (32 cases) groups. Age at registration of perimenopausal (47.87 +/- 4.38 yr) and surgical postmenopausal (48.06 +/- 6.49 yr) groups were younger than that of the natural postmenopausal group (55.74 +/- 6.80 yr). The perimenopausal group, who still had regular menstruation, was the youngest. The average FSH level of 60.46 +/- 33.15 mIU/mL was not different among groups. The estradiol level of perimenopausal (79.05 +/- 83.62 pg/mL) and surgical postmenopausal (63.05 +/- 136.39 pg/mL) groups were significantly higher than that of natural postmenopausal (25.05 +/- 37.663 pg/mL) group (p = 0.001). Serum level of FSH or E2 was not correlated with age or years since menopause. There was significant but minimal negative correlation between serum levels of FSH and E2.
  
  
  CONCLUSIONS
  Serum FSH and/or E2 levels are not accurate enough by themselves to rule in or rule out perimenopause. The authors suggested that clinicians should diagnose perimenopause based on menstrual history and age, without relying on laboratory testing.
authors.affiliation: Gynecologic Endocrinology Unit, Division of Reproductive Medicine, Department of Obstetrics and Gynecology, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand.
authors.forename: Surasak
authors.initials: S
authors.lastname: Angsuwathana
authors.forename: Prasong
authors.initials: P
authors.lastname: Tanmahasamut
authors.forename: Manee
authors.initials: M
authors.lastname: Rattanachaiyanont
authors.forename: Chongdee
authors.initials: C
authors.lastname: Dangrat
authors.forename: Kitirat
authors.initials: K
authors.lastname: Techatrisak
authors.forename: Suchada
authors.initials: S
authors.lastname: Indhavivadhana
authors.forename: Pichai
authors.initials: P
authors.lastname: Leerasiri
mesh_terms: D000367:Age Factors; D000704:Analysis of Variance; D004958:Estradiol / Q000097:blood*; D005260:Female; D005640:Follicle Stimulating Hormone / Q000097:blood*; D006801:Humans; D008597:Menstrual Cycle; D047648:Perimenopause; D017698:Postmenopause; D012189:Retrospective Studies
chemical_list: D004958:Estradiol; D005640:Follicle Stimulating Hormone