Is Trilaminar Endometrium Normal?

Endometrial thickness and appearance are the factors that must be considered when predicting the success of a fertility treatment. An trilaminar endometrium between 6-10 mm at the time of follow-up is a sign of good endometrial response to the treatment.

What is Trilaminar endometrium?

Trilaminar endometrium lining means there can be three defined lines into your uterus and the thickness is the distance between the two external lines, your gynaecologist knows how to measure it.

When does the endometrium become Trilaminar?

In the late proliferative phase, just prior to ovulation (day 14), the endometrium has a distinctive trilaminar or striated appearance with alternating hyper- and hypoechoic lines. After ovulation, when progesterone is produced, the endometrium becomes thicker and hyperechoic, losing definition of the layers.