In many early pregnancies, the hCG level will double every 31 to 72 hours. As the pregnancy progresses, hCG levels rise and the doubling time increases. In general, after 6-7 weeks of the pregnancy the best indication of a healthy pregnancy is a good fetal heartbeat.SK YOUR HCG QUESTIONS HERE. In most normal pregnancies at hCG levels below 1,200 mIU/ml the hCG usually doubles every 48-72 hours. At levels below 6,000 mIU/ml the hCG levels normally increase by at least 60% every 2-3 days, though increases between 50-60% can sometimes still be seen in normal pregnancies.
Passionate about all things Australian. The ozone layer is 1 to 3 millimeters thick, if compressed. However, the ozone itself is very diffuse, meaning it is spread out over a range of anywhere between 10 and 50 km.
The ozone layer is located in the stratosphere, a region of the atmosphere that is about 10 to 50 kilometers above the Earth. The stratosphere consists of approximately 90 percent ozone. Ozone has the chemical formula O3.