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All TopicsForum: HER2+ (Positive) Breast Cancer → Topic: How long does Herceptin stay in your system

Topic: How long does Herceptin stay in your system

Forum: HER2+ (Positive) Breast Cancer —

Testing, treatment, side effects, and more.

Posted on: Apr 4, 2009 08:41AM

lafera12 wrote:

Good morning all,

I'm getting my last treatment on Wednesday and wondering how long does the drug stay in your system?  My doctor told me I still have to get blood tests till its all out...

Have a good day


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Apr 6, 2009 08:37AM Maeve wrote:

My last herceptin was Dec 08 and my oncologist told me that it would stay in my system for up to 3 months, although he didn't continue to do blood tests after my final dose in Dec.  I kinda took comfort in the thought that it was still in my body for so long, although I guess it's all out now as I'm 4 months out of treatment!

Dx 6/11/2007, , 3cm, Stage IIIA, Grade 3, 4/16 nodes, ER+, HER2+