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 13
11 60 13 1443 54
12 85 3 2583 177
13 146 5 4622 342
14 233 8 8270 612
15 368 11 14798 1354
16 551 18 3138 1696
17 808 12 5367 1719
18 1170 30 9289 1774
19 1659 40 12979 1679
20 2379 52 13975 1478
21 3444 70 20956 1265
22 4832 152 27554 997
23 6654 107 36231 836
24 8785 138 47639 651
25 11455 177 62640 535
26 14488 227 82364 441
27 18097 291 108300 364
28 23519 374 203398 321
29 28991 480 394836 270
30 32127 995 189191 223

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