I had undergone chemotherapy vs I have undergone chemotherapy

Both phrases are correct, but they are used in different contexts. 'I had undergone chemotherapy' is used when referring to a past event that happened before another past event. 'I have undergone chemotherapy' is used when talking about an experience that happened at an unspecified time in the past and has relevance to the present.

Last updated: March 19, 2024 • 774 views

I had undergone chemotherapy

This phrase is correct when referring to a past event that happened before another past event.

This phrase is used to talk about a completed action in the past that occurred before another past event. It indicates a sequence of events in the past.

Examples:

I had undergone chemotherapy before I started feeling better.
She had undergone chemotherapy when she was diagnosed with cancer.

Show examples from the web [+]

Even though I had undergone chemotherapy, I knew that if I can make this never happen again, and not have my family see me in such conditions, why not go ...
Pt.: “I had undergone chemotherapy in Innsbruck, after I was diagnosed with hairy cell leukemia. After the chemotherapy, the leukocytes did not rise again for a ...
Aug 28, 2015 ... Again, if I had undergone chemotherapy in June, I would never have received the “good news” from the NCI in October. . Dec.: I applied to and ...
Dec 28, 2015 ... I had undergone chemotherapy in 2011 and again in 2013. Bone loss is a side effect of chemo AND I was also about to have an oophorectomy ...

Alternatives:

I underwent chemotherapy
I had chemotherapy
I had received chemotherapy
I had gone through chemotherapy
I had treatment with chemotherapy

I have undergone chemotherapy

This phrase is correct when talking about an experience that happened at an unspecified time in the past and has relevance to the present.

This phrase is used to talk about a past experience that is relevant to the present moment. It indicates that the action of undergoing chemotherapy has an impact on the present.

Examples:

I have undergone chemotherapy, so I understand what you're going through.
She has undergone chemotherapy, which is why she is cautious about her health.

Show examples from the web [+]

I have undergone chemotherapy, radiation and a stem cell transplant. Being a part of Pink Pearl allows me to connect with other young women facing cancer.
I have undergone chemotherapy, radiation, and surgery. Can vitamin B-17 still help me? 15. How long does it take to see results? How long will it take to rid my ...
Oct 25, 2009 ... From August 2008 through October 2008, I have undergone chemotherapy at the Rocky Mountain Cancer Center in Aurora, CO. Here my ...
Hassan writes: Like many of you or your children, I have undergone chemotherapy, radiation, and a variety of experimental treatments. As a result, I believe I ...

Alternatives:

I underwent chemotherapy
I have had chemotherapy
I have received chemotherapy
I have gone through chemotherapy
I have had treatment with chemotherapy

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I had undergone chemotherapy vs I have undergone chemotherapy