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 12
11 61 13 1443 49
12 84 3 2583 170
13 147 5 4622 333
14 231 8 8270 592
15 366 11 14798 1314
16 550 18 3138 1643
17 804 12 5367 1671
18 1161 30 9289 1727
19 1651 40 12979 1636
20 2381 52 13975 1441
21 3444 70 20956 1229
22 4790 152 27554 967
23 6606 107 36231 812
24 8781 138 47639 632
25 11415 177 62640 516
26 14404 227 82364 425
27 17992 291 108300 349
28 23355 374 203398 309
29 28609 480 394836 258
30 31897 995 189191 211

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