Decoding the ABCs of Fertility

It’s hard enough to try having a child, let alone now needing to learn a new language. Let’s save you some heartache and decode fertility lingo. Let’s share a story about Jane, so we can put the terms into context.

NOTE: The story is meant to be general and illustrative. Protocols and exact timing varies clinic to clinic and patient to patient.


Jane is 32 years old and has been trying to conceive (TTC) for over a year. She started with tracking her cervical fluid and BBT (basal body temperature). She then graduated to fertilty tracking apps.


Nothing worked.


Jane books an appointment with her OB/GYN given her concern over how long she has TTC. With her age and length of time TTC, she technically has infertility (IF).The doctor runs bloodwork (b/w) on cycle day 3 (CD3) and tests for FSH (follicle stimulating hormone), LH (luteinizing hormone), E2 (estradiol), AMH(anti-mullerian hormone), and Prolactin (Prl) and ultrasound to check AFC (antral follicular count).


Jane monitors her cycle further using an OPK (Ovulation Predictor Kit), and around CD21, which is during her Luteal Phase(LP), her P4 or Prog (Progesterone) is tested to ensure she ovulates. If her levels are high, it indicates she has ovulated.


Based on Jane’s results, specifically the DOR and AFC, it seems she has diminished ovarian reserve (DOR) and her OB/GYN recommends she see a fertility specialist, known as a REI (Reproductive Endocrinologist). The REI asks several questions of Jane’s and her partner’s medical history (HX) and repeats the b/w, adding a few more tests, which include: