[Value of serum placental protein 14 determination in differential diagnosis of abnormal early pregnancy].

Single measurements of hCG and placental protein 14 were carried out in 32 patients with tubal pregnancies, in 38 patients with spontaneous abortion and 28 women with normal intrauterine pregnancies from the 5th to the 7th week of pregnancy. HCG-measurement could only show significant differences between normal and abnormal early pregnancies. PP 14-measurements showed significant differences between all groups. Low concentrations of serum PP 14 point to an ectopic pregnancy.