All of the following disorders would have normal-to-elevated ferritin levels EXCEPT:

The WHO classification of AML is based on: (Select the best answer)

What cell forms calcified bone and produces cytokines to help regulate hematopoietic stem cell activity?

You are reviewing a patients lab results: RBC: 6.1×106/uL HGB: 8.0 g/dL HCT: 33 % MCV: 54.1 fL MCH: 13.1 pg MCHC: 24.2 % RDW: 19.1 % Serum ferritin decreased   Which type of anemia could correspond with these results?

Calculate the MCV of a sample with a hemoglobin concentration of 15.6 g/dL, a hematocrit of 46.7% and a RBC count of 4.20 x10^6/mcL.

Which of the following marrow elements provides the microenvironment for proliferation and differentiation of hematopoietic cells?

In chronic myelocytic leukemia, blood histamine concentrations are frequently elevated. This would likely reflect the:

Intrinsic and extrinsic tenase:

Which of the following defines an intrinsic erythrocyte defect:

All of the following laboratory tests can be used for evaluation of hemolysis EXCEPT: