Question

Which of the following statements regarding RBCs in the urinary sediment is true?

A. Yeast cells will lyse in dilute acetic acid but RBCs will not
B. RBCs are often swollen in hypertonic urine
C. RBCs of glomerular origin often appear dysmorphic
D. Yeast cells will tumble when the cover glass is touched but RBCs will not

Answer 1

The correct statement regarding RBCs in urinary sediment is that RBCs of glomerular origin often appear dysmorphic, indicating potential glomerular disease.

Step-by-step explanation:

The correct statement regarding red blood cells (RBCs) in the urinary sediment is: C. RBCs of glomerular origin often appear dysmorphic. When RBCs originate from the glomerulus, they often get distorted as they pass through the damaged glomerular basement membrane, leading to a dysmorphic appearance under the microscope, which can be an indication of glomerular disease. On the other hand, when RBCs are placed in a hypotonic solution, they swell due to osmotic pressure differences, leading to hemolysis. Conversely, in a hypertonic solution, water will flow out of the RBCs causing them to shrink, not swell.