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well sometimes it just depends what kind of cancer it is. But for breast cancer no it doesn't show up in blood. the only way the can tell if you have Breast cancer is by doing a breast exam. if the doctor sees a lump under your boob(s) or on the side by your armpit then you do have breast cancer. you can also do self exams. all you have to do it be topless and stand in front of a mirror, you lift up one boob then check to see if there is a lump you also wanna feel under your boob then you do the same thing to the other boob.

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11y ago
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7y ago

Most of the time and the exact test is determined by the physician, such as OVCA125 is if you suspect ovarian cancer. CBC is a blood count that is a good first choice to indicated possibilities within the patient.

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8y ago

Some forms of cancer show up in bloodwork, others do not. A biopsy or some other test is necessary if there is a possibility of cancer within the person and it does not show up in bloodwork.

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9y ago

Yes, if you have certain types of cancer your blood tests will come back abnormal. This is usually the first step to finding out you have cancer.

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Q: Can cancer show up in a blood test?
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