Several other urine biomarkers have been investigated for the detection of a UTI including myeloperoxidase (MPO), xanthine oxidase (XO), lactoferrin, urinary heparin-binding protein (UHBP), soluble triggering receptor expressed on myeloid cells-1 (TREM 1), and interleukins32. This evidence concerns the gene TREM1 and bacterial urinary tract infection.