Gynaecology & Obstetrics Schwangerschafts protein 1 (SP1), is a biochemical marker of- A Gestatinal trophoblastic disease B Ectopic pregnancy C Placenta accreta D Severe PIH 💡 Explanation Schwangerschafts protein 1 (SP1), is a biochemical marker of- ✓ Correct Answer: B. Ectopic pregnancy