Triple test for diagnosis of Down's syndrome includes all of the following except –
Triple test is a combined biochemical test which includes → MSAFP, HCG, & Oestriol

In an affected pregnancy  
level of MSAFP is decreased
level of oestriol is decreased
the level of hCG is High (increased)
β–HCG
α–Fetoprotein
Serum HPL level
Serum oestriol level
Serum HPL level