In addition to the CBC with differential,which of the following laboratory tests is considered to be most useful in diagnosing ACD and IDA?

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Serum ferritin is considered the most useful laboratory test in diagnosing ACD and IDA. Ferritin is a protein that stores iron in the body, and low levels are indicative of iron deficiency. A low serum ferritin level is highly specific for iron deficiency anemia, as it can accurately detect small amounts of iron deficiency before anemia develops. Serum iron, total iron binding capacity, and transferrin saturation can be useful in diagnosis but are less specific than serum ferritin.

In Addition to the CBC with Differential,which of the Following