What is the test?
An antral follicle count is an ultrasound scan that counts the small fluid-filled follicles (usually 2–10mm) visible in both ovaries.
What does it assess?
Like AMH, AFC estimates ovarian reserve and helps predict response to ovarian stimulation.
Who might need it?
People planning IVF or egg freezing, or having a fertility assessment where ovarian reserve information is useful.
When is it performed?
It is typically performed early in the menstrual cycle, often between days 2 and 5.
How is the test carried out?
A slim ultrasound probe is placed in the vagina. The scan usually takes 10–15 minutes and is generally not painful.
How should I prepare?
An empty bladder is usually best. You may want to wear comfortable clothing.
What can the results mean?
The total follicle count across both ovaries is recorded. Higher counts generally suggest a stronger response to stimulation; lower counts suggest a lower response.
What are its limitations?
AFC depends on scanner quality and operator experience, and does not measure egg quality. Like AMH, it does not predict natural conception.
Is it routinely recommended?
AFC is an established part of fertility assessment and IVF planning.
What happens next?
Your clinician will combine AFC with AMH, age and history to tailor medication doses or discuss options.
Frequently asked questions
Is AFC better than AMH?
Both are considered similarly useful. Many clinics use them together for a fuller picture.
Can AFC change month to month?
Some variation between cycles is normal.