To determine trough levels of a drug being administered to a patient, the nurse would expect to draw a blood sample at which time?
a. immediately before giving the drug c. one-half hour after giving an IV drug
b. immediately after giving the drug d. halfway between doses
A
If the specimen is drawn just before the next dose of a medication, the blood sample would be a trough level. A peak level would be drawn halfway between doses. The other times of blood drawing would not be significant in determining peak or trough drug levels.
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