β-Human Chorionic Gonadotropin Dynamics in Early Gestational Events: A Practical and Updated Reappraisal

Table 4

Expected minimal decrease (%) in β-hCG during the first week in spontaneously resolved PULs according to the initial β-hCG level.

Initial β-hCG (IU/L)	Day 2 (%)	Day 7 (%)
250	35	66
500	38	74
1000	42	79
1500	44	82
2000	46	83
2500	47	84
3000	48	85
4000	49	86
5000	50	87

Note. Values represent the 95^th centiles and may be used to reflect the slowest “normal” decline. Adapted from Butts et al. [28].