Tsukahara H, Hiraoka M, Sudo M, Okada T, Morikawa K, Kuroda M. Urinary fibrin and fibrinogen degradation products and the origin of hematuria.
ACTA PAEDIATRICA JAPONICA : OVERSEAS EDITION 1992;
34:525-9. [PMID:
1442024 DOI:
10.1111/j.1442-200x.1992.tb01000.x]
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Abstract
We examined urinary fibrin and fibrinogen degradation product (U-FDP) concentrations in pediatric patients with hematuria using the rapid and highly-sensitive latex particle agglutination test (LPAT), and assessed the value of this test for the localization of the site of hematuria. Patients with hematuria were divided into two groups: 60 with glomerular hematuria and 46 with non-glomerular hematuria. If U-FDP concentrations less than 0.25 microgram/ml are accepted as an indicator of glomerular bleeding, the sensitivity and specificity of localization of glomerular hematuria in the present study were 78% (47/60) and 89% (41/46), respectively. The high U-FDP concentrations observed in patients with non-glomerular hematuria may reflect direct bleeding into the urinary tract. Since all 13 patients with glomerular hematuria and U-FDP concentrations of 0.25 microgram/ml or more had coexistent erythrocyte cylindruria, the U-FDP test seems to be compensated with combined urinalysis for the relatively lower sensitivity. We conclude that a knowledge of U-FDP concentrations by LPAT can be of help in localizing the site of bleeding in hematuria.
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