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 24 5 289 17
11 60 13 1443 69
12 86 3 2583 204
13 149 5 4622 396
14 242 8 8270 718
15 378 11 14798 1539
16 566 18 3879 1942
17 838 12 6600 1972
18 1207 30 9289 2035
19 1708 40 12979 1931
20 2467 52 16384 1693
21 3578 70 23310 1455
22 5005 152 32625 1161
23 7073 107 36231 973
24 9298 138 47639 761
25 12121 177 62640 625
26 15303 91 82364 515
27 19137 231 108300 426
28 24530 374 203398 373
29 31268 480 394836 316
30 36118 995 189191 263

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