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 65
12 85 3 2583 198
13 147 5 4622 377
14 240 8 8270 686
15 376 11 14798 1484
16 561 18 3879 1866
17 830 12 6600 1892
18 1194 30 9289 1953
19 1692 40 12979 1849
20 2449 52 16384 1619
21 3557 70 23310 1387
22 4982 152 27554 1097
23 7043 107 36231 922
24 9174 138 47639 719
25 11777 177 62640 591
26 14981 227 82364 486
27 18767 291 108300 400
28 24240 374 203398 354
29 30855 480 394836 299
30 33721 995 189191 247

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