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Human beta chorionic gonadotropin (β-HCG)

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General Biology I

Definition

Human beta chorionic gonadotropin (β-HCG) is a hormone produced by the placenta shortly after implantation. It supports the early pregnancy by maintaining the corpus luteum, which produces progesterone.

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5 Must Know Facts For Your Next Test

  1. β-HCG levels can be detected in urine and blood tests to confirm pregnancy.
  2. The hormone peaks around 8-11 weeks of pregnancy and then declines.
  3. High or low levels of β-HCG can indicate potential issues such as molar pregnancies or ectopic pregnancies.
  4. β-HCG is also used in certain fertility treatments to trigger ovulation.
  5. The presence of β-HCG is what most home pregnancy tests are designed to detect.

Review Questions

  • What role does β-HCG play in supporting early pregnancy?
  • At what point during pregnancy do β-HCG levels typically peak?
  • Why might a healthcare provider test for β-HCG levels in a patient?

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