Elevations of LD in pernicious anemia can reach up to how many times the upper limit of normal?

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Multiple Choice

Elevations of LD in pernicious anemia can reach up to how many times the upper limit of normal?

Explanation:
Elevated LDH in pernicious anemia reflects massive intramedullary destruction of erythroid precursors due to defective DNA synthesis from B12 deficiency. The bone marrow becomes crowded with megaloblastic cells, and many die within the marrow, releasing LDH into the bloodstream. Because of this substantial intramedullary hemolysis, LDH can rise very high—often cited as up to about fifty times the upper limit of normal. This is a hallmark of the severe ineffective erythropoiesis seen in megaloblastic anemia, distinguishing it from milder or peripheral forms of hemolysis.

Elevated LDH in pernicious anemia reflects massive intramedullary destruction of erythroid precursors due to defective DNA synthesis from B12 deficiency. The bone marrow becomes crowded with megaloblastic cells, and many die within the marrow, releasing LDH into the bloodstream. Because of this substantial intramedullary hemolysis, LDH can rise very high—often cited as up to about fifty times the upper limit of normal. This is a hallmark of the severe ineffective erythropoiesis seen in megaloblastic anemia, distinguishing it from milder or peripheral forms of hemolysis.

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