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No two services carry the same drug box. So the National Registry can't test a fixed list. It tests something else: can you place an unfamiliar drug in its class and predict what it does?
Get the class right, and the indication, the effect, and the contraindication all follow.
One more rule sits under every class in this lesson. Concentration is not dose. The vial tells you concentration — milligrams per milliliter. The order tells you dose — what the patient gets. Confusing the two is the single most common way this content gets missed, and it comes back at the end as its own trap.
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