Gynaecology & Obstetrics Most sensitive test for measuring ss HCG levels for diagnosis of pregnancy is? A Serum beta HCG by ELISA B Urine pregnancy test C Immuno Radiometric assay D Radio immuno Assay 💡 Explanation Most sensitive test for measuring ss HCG levels for diagnosis of pregnancy is? ✓ Correct Answer: C. Immuno Radiometric assay