Esteras, RaquelFox, Jonathan GGeddes, Colin CMackinnon, BruceOrtiz, AlbertoMoreno, Juan Antonio2025-01-072025-01-072020-07-072077-0383https://hdl.handle.net/10668/28317Acute tubulointerstitial nephritis (ATIN) is a common cause of acute kidney injury. Although haematuria is a risk factor for the development of renal disease, no previous study has analyzed the significance of haematuria in ATIN. Retrospective, observational analysis of 110 patients with biopsy-proven ATIN was conducted. Results: Haematuria was present in 66 (60%) ATIN patients. A higher percentage of ATIN patients with haematuria had proteinuria than patients without haematuria (89.4% vs. 59.1%, p = 0.001) with significantly higher levels of proteinuria (median (interquartile range) protein:creatinine ratio 902.70 (513-1492) vs. 341.00 (177-734) mg/g, penAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/acute kidney injuryacute tubulointerstitial nephritischronic kidney diseasehaematuriakidney biopsyoutcomesproteinuriaresearch article32645825open access10.3390/jcm9072135PMC7408949https://www.mdpi.com/2077-0383/9/7/2135/pdfhttps://pmc.ncbi.nlm.nih.gov/articles/PMC7408949/pdf