Schwangershaft protein is the other name of
Schwangershaft Protein:

It is the other name for pregnancy specific B1 glycoprotein.
Produced by trophoblast.
Can be detected 18 days after ovulation.
Its concentration rises steadily and reaches 200 mg/ml at term.
Role-measure of placental function for fertility control.
HCG
Papp-1
Pregnancy specific betal 1 glycoprotein
Activin