Diagnosis of early pregnancy by enzyme immunoassay of Schwangerschafts-protein 1.

@article{Ho1988DiagnosisOE,
  title={Diagnosis of early pregnancy by enzyme immunoassay of Schwangerschafts-protein 1.},
  author={Pak Chung Ho and Selina S Y Chan and G WK Tang},
  journal={Fertility and sterility},
  year={1988},
  volume={49 1},
  pages={76-80}
}
Serum Schwangerschafts-protein 1 (SP1) and beta subunit of human chorionic gonadotropin (beta-hCG) were measured by enzyme immunoassay and radioimmunoassay, respectively, in the follicular phase and luteal phase of 50 human menopausal gonadotropin treatment cycles. SP1 could be detected in 63% of blood samples taken in the follicular phase up to the level of 1.56 micrograms/l. Using a cutoff level of 2 micrograms/l, SP1 could be used to diagnose pregnancy 16 to 25 days after the ovulating dose… CONTINUE READING