You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is True about hCG is : and explain in detail?
hCG is a glycoprotein with high sialic acid content. It bears a close structural similarity to the other glycoprotein hormones (FSH, LH, and TSH) all of whose alpha subunits are identical. It rescues and maintains corpus luteumtill 6 weeks of pregnancy. doubling time is 1.4-2days. maximum levels reach between 60-70 days of pregnancy. Reference: Dutta Textbook of Obstetrics 7th edition page 58