Роль лабораторних досліджень у діагностиці причин аномальних маткових кровотеч

The article presents an analysis of data from the revision of the classification system of abnormal uterine bleeding (AUB) carried out by FIGO in 2019. According to this classification system, there are 9 groups of etiological factors of AUB, divided into 2 categories: mainly structural (polyp, adenomyosis, uterine myoma, malignant processes) and mainly functional (coagulopathy, ovulatory dysfunction, endometrial pathology, unclassified causes). This is characterized by the prevalence of certain causes in different age periods of the life of women, often a combination of several causes is present. Contemporary possibilities of laboratory diagnostics of ovulatory dysfunctions, as well as endometrial pathologies, in particular chronic endometritis as often underestimated cause of AUB, are considered in detail.