Clinical Laboratory Hematology 3rd Edition by Shirlyn McKenzie, Lynne Williams

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Roger, a 52-year-old man with hyperuricemia, went to the clinic for a follow-up evaluation for splenomegaly. His palpable spleen, noted 18 months earlier, had been gradually enlarging. He originally denied fatigue, fever, and discomfort. He was examined, and a CBC was ordered. The results revealed leukocytosis, thrombocytosis, and anemia.
Consider how reflex laboratory testing can assist in diagnosing this patient.
Physical examination revealed a slightly enlarged liver and palpable spleen. Roger had hyperuricemia. Blood counts showed:
The blood cell differential showed marked anisocytosis, poikilocytosis with many teardrops, and numerous nucleated red blood cells (NRBCs). Immature myeloid cells were found along with basophilia and large platelets.
Based on Roger's history and current laboratory data, what other tests should be performed?