Ep. 7 | Estimated Due Dates

Parikh’s Formula

Smithsonian Magazine Article on the Relationship Between Gestation Length and Metabolism

March of Dimes Response to ACOG Guidelines for Induction (2009)


Ultrasound vs. LMP Guidelines (as mentioned in this episode):

  • Within 5 days of the LMP date before 9 weeks of gestation by LMP
  • Within 7 days of the LMP date from 9 to 16 weeks by LMP
  • Within 10 days of the LMP date from 16 to 22 weeks by LMP
  • Within 14 days of the LMP date from 22 weeks to 28 weeks by LMP 
  • Within 21 days of the LMP date after 28 weeks by LMP

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