You Are Asked to Test the Osmotic Fragility of a Patient's

question 12

Multiple Choice

You are asked to test the osmotic fragility of a patient's red blood cells (RBCs) .After calculating the percent lysis,you plot the results.The patient's lysis curve is significantly shifted to the left of the normal curve.What does this indicate?

• A) The patient's RBCs have a high osmotic fragility, consistent with the presence of spherocytes.
• B) The patient's RBCs have a high osmotic fragility, consistent with the presence of target cells.
• C) The patient's RBCs have a low osmotic fragility, consistent with the presence of spherocytes.
• D) The patient's RBCs have a low osmotic fragility, consistent with the presence of target cells.