[Clinical study of the relationship between unknown etiology of renal hematuria and serum zinc concentrations].

The relationship between red blood cell counts in urine of 165 patients with unknown etiology of renal hematuria and serum zinc levels was examined. There was a significant negative correlation between red blood counts in urine and serum zinc levels. The clinical course and changes of serum zinc levels of 2 cases (case 1: 21 years old female, case 2: 46 years old male) with unknown etiology of renal hematuria are reported. Serum zinc levels showed the clinical stage of unknown etiology of renal hematuria. Renal biopsy should be done in patients with low serum zinc levels and renal hematuria continuing for a long time. Clinically, serum zinc level could be used as a marker of effect of treatment for unknown etiology of renal hematuria. Serum zinc levels were low in 165 patients with renal hematuria.