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My blood work became abnormal after I received the Johnson & Johnson Covid vaccine shot March 12, 2021

A MyMyelomaTeam Member asked a question 💭

I’ve been a heart patient since January 2000 so for 25 years my doctors have monitored my blood work. It has always been normal up until the time I received the Johnson & Johnson Covid vaccine shot in March 12 of 2021 right after that, my blood work started showing abnormalities and two months ago my blood work took a dive. The Johnson & Johnson vaccine was taken off the market one month later I’m wondering if anybody else had similar Reactions to the Johnson & Johnson vaccine and if there is… read more

November 17, 2025 (edited)
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Reactions
A MyMyelomaTeam Member

I’m just stating my experience!

November 17, 2025
A MyMyelomaTeam Member

There is a lot of speculation about Covid shots & cancer amongst other illnesses. But there is no definitive proof there is a relationship, doesn't mean there isn't, but I would like to see scientific proof before I subscribe to anything.

November 17, 2025
MyMyelomaTeam

Have you experienced blood work abnormalities after receiving the Johnson & Johnson COVID vaccine?

It's understandable to be concerned when blood work changes, especially after 25 years of stability. While the timing feels significant to you, myeloma itself can cause blood abnormalities that develop over time, sometimes Show Full Answer

Have you experienced blood work abnormalities after receiving the Johnson & Johnson COVID vaccine?

It's understandable to be concerned when blood work changes, especially after 25 years of stability. While the timing feels significant to you, myeloma itself can cause blood abnormalities that develop over time, sometimes unpredictably.

Myeloma affects your blood counts in several ways:

* It can lower white blood cells, making infections more likely
* It can reduce platelets, causing easy bruising or bleeding
* Myeloma cells compete with healthy blood cells, affecting overall counts

Your doctors can help determine what's causing your blood work changes through additional testing. They may order specific tests to evaluate whether myeloma progression is involved.

Regarding the vaccine connection, it's important to discuss your concerns with your healthcare team. They can review your complete medical history and blood work patterns to help identify what's happening.

Have your doctors discussed what specific blood values are abnormal? Understanding which counts have changed can help guide the conversation with your medical team about next steps.

November 17, 2025

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