A 50-year-old member asked:
how long do the drugs for chemotherapy and rituxan (rituximab) stay in the system after you're finished?
2 doctor answers
Dr. Devon Webster answered
21 years experience Medical Oncology
Up to 3 months: Chemotherapy leaves the body very quickly, usually within 24 hours. Rituxan (rituximab) is a monoclonal antibody, which is a protein. It's half-life is one-week, meaning it takes 7 days for half the amount to be gone from your system, and another 7 days for half of the remaining amount to be gone, etc. Rituxan can still be measured in the blood up to 3 months after a dose!
Answered on Apr 10, 2020
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