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
14 238 8 8270 668
15 375 11 14798 1454
16 560 18 3138 1829
17 822 12 5367 1849
18 1191 30 9289 1907
19 1681 40 12979 1808
20 2437 52 13975 1588
21 3536 70 20956 1361
22 4977 152 27554 1081
23 6942 107 36231 906
24 9151 138 47639 706
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