A patient with multiple sclerosis is to begin treatment with interferon beta. The patient comes to the clinic to have pretreatment laboratory tests. Which statement by the patient indicates a need for further teaching about these tests?
a. "After the first year of treatment, I will need once yearly blood work."
b. "I will need to have lab tests done every 3 months for the first year."
c. "If my liver function tests are abnormal, I will need to stop using this drug."
d. "These lab tests will measure liver and bone marrow function."
ANS: A
Patients treated with interferon beta require evaluation of bone marrow function with CBCs and of liver function with liver function tests (LFTs) at the beginning of therapy for baseline, every 3 months for a year, and then every 6 months thereafter. Abnormal LFTs warrant discontinuation of the drug.
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