Use This Case to Answer the Follwing Questions:
During a Discussion

Use this case to answer the follwing questions:
During a discussion of RBC indices, a medical technologist of Cambodian origin mentioned that her own red cells were small in a CBC per?formed two years earlier in a routine physical. A more recent CBC showed the following results.
$\begin{array}{ll}\text { TEST } & \text { RESULTS } \\\text { WBC } & 9.3 \times 10^{9} / \mathrm{L} \\\text { RBC } & 6.11 \times 10^{12} / \mathrm{L} \\\mathrm{HGB} & 13.0 \mathrm{~g} / \mathrm{dL} \\\mathrm{HCT} & 41.8 \% \\\text { MCV } & 69.6 \mathrm{fL} \\\text { MCH } & 22.5 \mathrm{pg} \\\text { MCHC } & 31.0 \mathrm{~g} / \mathrm{dL} \\\mathrm{RDW} & 15.8 \\\mathrm{PLT} & 351 \times 10^{9} / \mathrm{L}\\\text { Differential }& \text { Within normal limits }\\\end{array}$
-What reflex test is most appropriate to investigate these results?

A) Hemoglobin electrophoresis and iron studies
B) Bone marrow aspirate
C) Vitamin B?? and folate assays
D) Cytogenetic analysis

Correct Answer:

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