Beta Doubling times for Successful* Single Pregnancies

Beta range Median doubling time (hrs) Fastest doubling time (hrs) Slowest doubling time (hrs) Number of women reporting a doubling time for this day
2 - 4 21.62 12.00 42.74 11
4 - 8 24.76 12.00 124.58 56
8 - 16 28.02 12.00 124.58 183
16 - 32 33.50 14.45 365.73 586
32 - 64 35.70 14.53 731.84 1492
64 - 128 37.33 14.92 681.75 3100
128 - 256 38.33 14.96 505.12 4962
256 - 512 39.31 15.11 928.16 5909
512 - 1024 40.55 14.58 1873.27 5933
1024 - 2048 42.62 14.58 813.06 5160
2048 - 4096 45.90 14.58 723.05 4079
4096 - 8192 51.15 14.58 10704.95 3027
8192 - 16384 61.07 14.58 905.83 1980
16384 - 32768 75.44 22.49 4695.28 1180
32768 - 65536 102.93 22.49 1220.17 611
65536 - 131072 138.10 28.93 1658.40 275
131072 - 262144 194.75 28.93 15745.01 58
262144 - 524288 211.42 28.93 263.56 5

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