<prompt> Triple test includes:Maternal AFP HCG EstradiolMaternal AFP HCG PAPPAMaternal AFP PAPPA EstradiolTSH HCG Estradiol  <response>: Ans. is a, i.e. Maternal AFP hCG EstradiolThis is a repeat question and doesnt need explanation- actually it is estriol levels and not estradiol levels which are checked but since in options only estradiol is mentioned so we go with it. 