Petchclai, BNienhom, S2009-05-272009-05-271983-04-01Petchclai B, Nienhom S. A comparative study of pregnancy test kit produced in Thailand. Journal of the Medical Association of Thailand. 1983 Apr; 66(4): 227-30http://imsear.searo.who.int/handle/123456789/41985Chotmaihet Thangphaet.engChorionic Gonadotropin --urineFemaleHemagglutination Inhibition Tests --standardsHumansLatex Fixation Tests --standardsPregnancyPregnancy Tests, Immunologic --standardsThailandA comparative study of pregnancy test kit produced in Thailand.Comparative Study