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 85 3 2583 178
13 147 5 4622 344
14 233 8 8270 614
15 368 11 14798 1364
16 552 18 3138 1709
17 807 12 5367 1730
18 1171 30 9289 1785
19 1659 40 12979 1691
20 2383 52 13975 1489
21 3437 70 20956 1275
22 4832 152 27554 1005
23 6654 107 36231 842
24 8789 138 47639 656
25 11434 177 62640 539
26 14476 227 82364 444
27 18093 291 108300 365
28 23437 374 203398 322
29 28867 480 394836 271
30 32127 995 189191 223

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