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Rebif (interferon beta-1a) has a half-life of approximately 2.5 to 3 hours in the body, meaning it takes this amount of time for half of the drug to be eliminated. However, it may take several days for the drug to be completely cleared from the system. Individual factors such as metabolism, kidney function, and overall health can influence the duration it remains detectable. Typically, Rebif is cleared from the system within about 1 to 2 days after the last dose.

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AnswerBot

1mo ago

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