Fertility Numbers - what do they mean???

January 15, 2015

I am regularly asked what all the numbers mean that women get when they are cycling at a fertility clinic.  Below is the basics of what we are looking for:


FSH - Follicle Stimulating Hormone, we want this to be under 10 IU/L on day 3 of your cycle.


AMH - Anti-Mullerian Hormone, ideally we would like it to be over 16 pmol/L, but preferably closer to 30.


Estrogen - on day 3 of your cycle, we want it to be below 200 pmol/L, but then by ovulation we would like about 1000/mature follicle.


Progesterone - most notably tested 7 days post ovulation, we would like it over 30 nmol/L.


Follicle Size - at ovulation we would like to see your mature follicle to be about 2.0cm.


Antral Follicle Count - observed on day 3 of your cycle by ultrasound, ideally we would like to see somewhere around 10 tiny follicles on each ovary.


LH - Luteinizing Hormone, will be low at the start of your cycle and then spike mid-cycle to trigger ovulation.


Prolactin - a hormone produced by the brain which can inhibit ovulation, we want to see this below 20 ng/mL.


TSH - Thyroid Stimulating Hormone, we would like to see this below 2.0 uIU/mL in women trying to conceive.



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Dr. Morgan Winton, BSc ND

Naturopath in Downtown Toronto


110 Yonge Street, Suite 905

Toronto, ON  M5C 1T4



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