Gynaecology & Obstetrics 23 year old Female presents with 42 days of amenorrhea and vaginal spotting. Which of the following is the most useful diagnostic test? A Transvaginal USG B Urine pregnancy test C Beta HCG D Serum Progesterone 💡 Explanation 23 year old Female presents with 42 days of amenorrhea and vaginal spotting. Which of the following is the most useful diagnostic test? ✓ Correct Answer: A. Transvaginal USG