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 56
12 84 3 2583 183
13 146 5 4622 351
14 234 8 8270 631
15 370 11 14798 1391
16 557 18 3138 1744
17 814 12 5367 1769
18 1181 30 9289 1824
19 1667 40 12979 1729
20 2414 52 13975 1525
21 3494 70 20956 1306
22 4918 152 27554 1031
23 6778 107 36231 865
24 9022 138 47639 674
25 11617 177 62640 554
26 14759 227 82364 455
27 18330 291 108300 374
28 23916 374 203398 332
29 30300 480 394836 279
30 32628 995 189191 229

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