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
14 239 8 8270 673
15 375 11 14798 1462
16 561 18 3879 1838
17 827 12 6600 1861
18 1191 30 9289 1918
19 1681 40 12979 1819
20 2440 52 13975 1597
21 3544 70 20956 1369
22 4977 152 27554 1087
23 6952 107 36231 912
24 9155 138 47639 711
25 11760 177 62640 584
26 14880 227 82364 480
27 18383 291 108300 394
28 23942 374 203398 348
29 30332 480 394836 294
30 33310 995 189191 243

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