Beta Scores for Successful* Twins Pregnancies

Days Past Ovulation
(What is this?)
Median HCG Level Lowest HCG Level Reported Highest HCG Level Reported Number of women reporting a number for this day
10 24 5 289 17
11 59 13 1443 78
12 86 3 2583 220
13 147 5 4622 424
14 241 8 8270 759
15 376 11 14798 1620
16 565 18 4913 2059
17 839 12 6600 2097
18 1210 30 9289 2155
19 1716 40 12979 2033
20 2478 52 16384 1785
21 3589 70 23310 1539
22 5005 152 32625 1231
23 7073 107 36231 1035
24 9358 138 47639 809
25 12153 177 62640 666
26 15159 91 82364 545
27 18939 231 108300 452
28 24297 374 203398 395
29 31086 480 394836 337
30 35753 995 189191 281

* Pregnancies are deemed successful if a heartbeat is detected.
Show results for pregnancies between and years old