Ovulation Induction (OI)

Ovulation Induction (OI) is for when you may or may not ovulate regularly and who have normal fallopian tubes and there is regular sperm quality. The treatment involves stimulating the ovaries with ovarian stimulation medication and the follicular growth monitored with blood tests and possibly ultrasound scans for timed intercourse. This is a common first step along the fertility treatment journey.

OI involves taking medication, there are two methods that can be used: ovarian stimulation medications (Clomiphe Citrate Letrozole) or injections of follicle stimulating hormone (FSH). Some clients with PCOS may also require Metformin. Click here to learn more about Metformin.

Medication is used to stimulate a follicle on the ovary which contains the developing egg, sometimes more than one follicle will grow. The progress of the developing follicles is monitored by measuring the oestrogen hormone they produce using blood tests, and through watching them grow by ultrasound examination. When the size of the follicle and the oestrogen level suggests that the egg is soon to be released (ovulation) the client is advised to have intercourse.

Megan Black

Nurse Manager


Megan leads the nursing team through the continually changing face of IVF. She works in a multidisciplinary team, providing the essential organization between the doctors and laboratory and ensuring communication between all departments.

Megan started her IVF nursing career in the United Kingdom, working in two large London clinic’s before returning to New Zealand. She is also the Secretary of Fertility Nurses of Australasia.

I love working with people and see nursing as a vocation, not a job. I usually spend my downtime absorbed in a good book and planning my next travel adventure.