Final answer:
Beta-hCG levels peak between 8 to 12 weeks of pregnancy at around 100,000 to 150,000 mIU/mL.
Step-by-step explanation:
Beta-hCG levels peak during pregnancy and can be measured to indicate the stage of pregnancy. Typically, beta-hCG levels reach their peak between 8 to 12 weeks of pregnancy. The level at peak can vary, but it is generally around 100,000 to 150,000 mIU/mL.