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 23 5 289 15
11 60 13 1443 64
12 85 3 2583 197
13 147 5 4622 376
14 239 8 8270 680
15 375 11 14798 1475
16 561 18 3879 1855
17 828 12 6600 1879
18 1193 30 9289 1938
19 1690 40 12979 1837
20 2446 52 16384 1610
21 3556 70 23310 1379
22 4977 152 27554 1093
23 6952 107 36231 918
24 9155 138 47639 717
25 11761 177 62640 589
26 14964 227 82364 484
27 18647 291 108300 398
28 24000 374 203398 352
29 30488 480 394836 297
30 33503 995 189191 245

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