The term "active urine sediment" refers to changes seen with intrinsic renal disease such as acute glomerulonephritis.
Findings in active urine sediment:
(1) dysmorphic red blood cells
(2) red blood cell casts
(3) granular casts
An active urine sediment is usually associated with gross color changes with proteinuria and a positive dipstick test for blood.
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Specialty: Nephrology, Clinical Laboratory