title: Inhibin-A levels between 14 and 20 weeks of gestation in Thai women.
abstract: OBJECTIVE
  To construct a normal value for inhibin-A concentrations at 14-20 weeks of gestation for a Thai population.
  
  
  METHODS
  Inhibin-A concentrations from pregnant women without Down's syndrome at 14-20(+6) weeks of gestation were measured. Maternal serum inhibin-A levels were analyzed according to the gestational age.
  
  
  RESULTS
  Serum specimens from 727 Thai women were analyzed. Inhibin-A levels decreased from 14 to 17(+4) weeks and then gradually rose thereafter, giving a U-shape pattern.
  
  
  CONCLUSIONS
  The data of inhibin-A concentration at 14-20 weeks of gestation for normal Thai pregnant women fitted well with quadratic regression.
authors.affiliation: Departments of Obstetrics and Gynaecology             Department of Pediatrics, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand.
authors.forename: Patama
authors.initials: P
authors.lastname: Promsonthi
authors.forename: Panyu
authors.initials: P
authors.lastname: Panburana
authors.forename: Praguywan
authors.initials: P
authors.lastname: Kadegasem
authors.forename: Piya
authors.initials: P
authors.lastname: Chaemsaithong
authors.forename: Domerudee
authors.initials: D
authors.lastname: Preechapornprasert
authors.forename: Boonsri
authors.initials: B
authors.lastname: Chanrachakul
mesh_terms: D000328:Adult; D003430:Cross-Sectional Studies; D005260:Female; D005865:Gestational Age; D006801:Humans; D007265:Inhibins / Q000097:blood*; D011247:Pregnancy / Q000097:blood*; D011262:Pregnancy Trimester, Second / Q000097:blood*; D012016:Reference Values; D013785:Thailand
chemical_list: C422362:inhibin A; D007265:Inhibins