This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ectopic Pregnancy (Hello ! Where are you ?), Subject name: Gynaecology & Obstetrics
The best way to definitely diagnose an ectopic pregnancy is ? 
Select and explain. 
A. Laparoscopy, B. Culdocentesis, C. serial bHCG levels and correlate with doubling titres, D. USG
A: Laparoscopy
Answer: A: Laparoscopy 
Explanation: The usual and regular way to diagnose an ectopic is the Transvaginal USG Serial bHCG levels are helpful adjuncts and not superior to TVS MRI is the best imaging technique to diagnose an ectopic and is considered a 'Trouble Shooter' when there is a doubt. Best method to diagnose an ectopic pregnancy irrevocably is Laparoscopy