Relaxin release peak during pregnancy occurs at which weeks?

Relaxin release peak during pregnancy occurs at which weeks?

• A. Week 10-12
• B. Week 20-22
• C. Week 28-30
• D. Week 34-36

Answer: (A)

Relaxin rises early in pregnancy to help remodel pelvic tissues and soften the cervix, with the corpus luteum driving much of this early production. By about 10–12 weeks, the placenta begins contributing as well, and the overall circulating levels peak around this transition period. After this window, relaxin levels don’t reach a new peak again, even though it stays present to support tissue changes, so later weeks (mid to late pregnancy) aren’t when the peak occurs. That’s why the correct window is 10–12 weeks.

Relaxin rises early in pregnancy to help remodel pelvic tissues and soften the cervix, with the corpus luteum driving much of this early production. By about 10–12 weeks, the placenta begins contributing as well, and the overall circulating levels peak around this transition period. After this window, relaxin levels don’t reach a new peak again, even though it stays present to support tissue changes, so later weeks (mid to late pregnancy) aren’t when the peak occurs. That’s why the correct window is 10–12 weeks.