The reticulocyte production index (RPI) corrects the hematocrit to a normal value of which percentage, and takes into account the maturation time of the reticulocyte at a particular hematocrit?

Choose the valence orbital diagram that represents the ground state of Se2⁻.

Alloimmune hemolytic anemia may result from:

What can cause extracorpuscular hemolytic anemia?

Anti-K was detected in a patient’s serum 1 year ago in a routine antibody screen. This patient was transfused red cells containing antigen specific for anti-K. Forty-eight hours later the patient began exhibiting signs of a hemolytic anemia. What type of transfusion reaction is present?

ADVANCED CONCEPTS A patient who usually takes metformin was switched to insulin immediately following an angiogram. Which patient finding indicates it is safe for the patient to switch back to metformin?

Although sickle cell trait is usually asymptomatic, sickling can still occur when caused by which of the following?

The morphologic hallmark of HS hereditary spherocytosis on the peripheral blood smear is:

Where does extravascular phagocytosis of red cells occur?

A 5-year-old boy presents with a hemoglobin and hematocrit of 10 g/dL and 30% respectively, a serum bilirubin of 3.0 mg/dL, a RBC count of 4.0 million/µL, and splenomegaly. Which clinical expression of thalassemia best correlates with the data?