The black vertical bars indicate the range of values seen in different age groups. For example, a 38-year-old woman might have an AMH as high as 1.3 and as low as 0.7. The woman with the AMH of 1.3 will have better fertility, in general, than the woman who has an AMH of 0.7.
You can have your AMH level tested at Olive, and some other labs in the province. The cost is $147 and it's a single blood test. In my practice, I encourage most women to have their AMH checked unless I have performed an antral follicle count on them (by ultrasound) and am confident I know their egg count.
More data = more knowledge = better care = more babies!