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 85 12
11 61 13 1443 51
12 84 3 2583 172
13 146 5 4622 335
14 232 8 8270 597
15 366 11 14798 1322
16 550 18 3138 1655
17 804 12 5367 1684
18 1161 30 9289 1738
19 1651 40 12979 1647
20 2382 52 13975 1448
21 3446 70 20956 1236
22 4800 152 27554 972
23 6630 107 36231 817
24 8785 138 47639 637
25 11434 177 62640 521
26 14404 227 82364 429
27 17992 291 108300 353
28 23355 374 203398 311
29 28609 480 394836 260
30 31897 995 189191 213

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