Kynurenine pathway activation in ectopic pregnancy: diagnostic value of 3-hydroxykynurenine and 3-hydroxyanthranilic acid; a prospective study​Sevcan Sarikaya Fatma Sengul-Bag Fadime Ovali Firdevs Sak Pinar Aytan-Tomas Oguzhan Gunenc Husamettin Vatansev a Department of Obstetric ve Gynecology, Konya City Hospital, Konya, Türkiyeb Department of Biochemistry, Faculty of Pharmacy, University of Adıyaman, Adıyaman, Türkiyec Faculty of Medicine, Department of Medical Biochemistry, Selcuk University, Konya, Turkeyon February 21, 2026 at 3:24 am