Average is about 20 at 4 weeks LMP, and 40 at 14 weeks LMP. It is important to note that while a higher progesterone level corresponds with higher pregnancy success rates, one cannot fully predict outcome based on progesterone levels.
Shanghai Tunnel Paranormal Inv./Human Trafficking Ed. Fundraiser. Be the first to officially investigate a new section of the Shanghai Tunnels with renowned ghost hunter Robb Demarest, tour an established section of the Shanghai Tunnels, and support our efforts to educate the public about human trafficking.
Currently the world's longest tunnel is Japan's Seikan tunnel which links the main island of Honshu with Hokkaido and is 33 miles (53km) in length, closely beating the Channel Tunnel which is 31 miles (49km) long.