β-Human Chorionic Gonadotropin Dynamics in Early Gestational Events: A Practical and Updated Reappraisal
Table 3
Expected minimum decrease (%) in β-hCG during the first week of miscarriage according to the initial β-hCG level.
Initial β-hCG (IU/L)
Day 2
Day 7
50
12
34
100
16
47
150
18
53
200
19
57
250
21
60
300
22
62
400
23
65
500
24
68
1000
28
74
1500
30
77
2000
31
79
2500
32
80
3000
33
81
4000
34
83
5000
35
84
Note. Values represent the 95th centiles and may be used to reflect the slowest “normal” decline. Adapted from Barnhart et al. [17] and Chung et al. [19].
