Doubling times for betas between 4 and 8

15 Twins Pregnancies In This Range

Doubling TimeNumber of Pregnancies in this range
9 - 10 hours   (1)
10 - 12 hours   (2)
12 - 13 hours   (0)
13 - 15 hours   (1)
15 - 18 hours   (5)
18 - 20 hours   (2)
20 - 23 hours   (1)
23 - 26 hours   (0)
26 - 29 hours   (1)
29 - 33 hours   (0)
33 - 38 hours   (1)
38 - 43 hours   (1)