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 85 3 2583 167
13 147 5 4622 326
14 233 8 8270 580
15 367 11 14798 1294
16 550 18 3138 1619
17 804 12 5367 1643
18 1167 30 9289 1697
19 1651 40 12979 1608
20 2378 52 13975 1413
21 3441 70 20956 1204
22 4744 152 27554 946
23 6630 107 36231 793
24 8828 138 47639 615
25 11457 177 62640 504
26 14453 227 82364 415
27 18045 291 108300 341
28 23380 374 203398 300
29 28743 480 394836 252
30 32012 995 189191 207

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