This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Gynaecology & Obstetrics
Which of the following is true regrading hCG: September 2010 
Select and explain. 
A. Half-life is around 7 days, B. Low levels are seen in hydatidiform mole, C. HCG can be detected as early as 8-9 days after conception, D. All of the above
C: HCG can be detected as early as 8-9 days after conception
Answer: C: HCG can be detected as early as 8-9 days after conception 
Explanation: Ans. C: HCG can be detected as early as 8-9 days after conception