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 63
12 85 3 2583 194
13 147 5 4622 370
14 239 8 8270 669
15 375 11 14798 1456
16 561 18 3138 1831
17 824 12 5367 1851
18 1191 30 9289 1909
19 1681 40 12979 1810
20 2438 52 13975 1589
21 3541 70 20956 1362
22 4978 152 27554 1082
23 6947 107 36231 907
24 9155 138 47639 707
25 11761 177 62640 581
26 14922 227 82364 477
27 18600 291 108300 392
28 23955 374 203398 347
29 30488 480 394836 293
30 33397 995 189191 242

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