Results
The positivity rates of serum hCGβ, intact hCG, and total hCG were 6% (1/17), 47% (7/15), and 42% (8/19), respectively, with the latter two having significantly higher positivity rates than hCGβ (p = 0.041). Both intact and total hCGs showed similar values. The median value of hCGβ, intact hCG, and total hCG before treatment was 0.1 ng/mL, 4.6 mIU/mL, and 4.5 mIU/mL, respectively.