Doctor insights on:
Does Colon Cancer Show Up In Blood Tests
Not really.: Apart from tests for genetic markers, breast cancer is usually diagnosed from self exam or mammography where a mass is detected. If it persists throughout the cycle, or is in postmenopausal women, it should be aspirated. If the fluid is bloody or leaves a residual mass, or the original mass is solid, a mammogram and excisional biopsy are done. ...Read moreSee 1 more doctor answer
Cancer is a group of diseases that is characterized by uncontrolled cell growth leading to invasion of surrounding tissues that spread to other parts of the body. Cancer can begin anywhere in the body and is usually related to one or more genetic mutations that allow normal cells to become malignant by interfering with internal cellular control mechanisms, such as programmed cell death or by preventing ...Read more
Not all cancers: Most cancers are not detected in the blood initially. There are a few that produce markers that allow us to screen patients for cancer with a blood test. Prostate cancer is the most common. There are some blood markers that are used to detect GI cancers as well as to follow patients with gyn cancers as well as breast. Testicular cancer also has commonly used markers. Must be in context of case. ...Read more
Perhaps indirectly: If bleeding and blood loss sufficient to produce anemia. Looking at blood results is not the way to diagnose colon cancer. Occult blood/guaiac card shows presence leading to colonoscopy for diagnosis. Treatment is right colectomy collecting at least 13 nodes. ...Read moreSee 1 more doctor answer
No: In fact not usually. Psa so far has most data for screening for & evaluating prostate cancer. Other tumor markers are less reliable but can supplement other studies. We need to be cautious considering either screening for or following cancer solely based on blood tests. ...Read moreSee 1 more doctor answer
Different ways: Tumor markers, or blood tests for certain cancers can be used for screening, or to evaluate treatment. They are not "diagnostic" of cancer, and some are more specific than others. Psa is specific for prostate cancer but elevated psa is not diagnostic for prostate ca. Cea is useful for evaluating several types of cancer once diagnosed, but isn't at all a screening test. ...Read more
Most: most cancers can show up as shed markers in the urine and blood by performing an ELISA. The problem is that for the most part the markers represent carbohydrate antigens which also appear in an inflammatory condition involving the organ. As such it is recommended to use the markers for following clinical response rather than for diagnosis. ...Read more
Can you have cancer (not of the blood or bone marrow) that would not show up in bloodwork? dies leukemia always show up in abnormal bloodwork?
No: A fecal occult test tests for blood in the stool. Colon cancer can be a cause but so can colon polyps, hemorrhoids, stomach ulcer and many other causes. Anyone with a positive fobt test should have further work up done to evaluate where the blood is coming from. ...Read moreSee 1 more doctor answer
No: Bladder cancer is not detected during a routine urine test (urinalysis) as part of a physical examination. If bladder cancer is suspected, a special urine test is required called a urine cytology. This test is much more specific for detecting bladder cancer although it has its limitations as well. ...Read moreSee 1 more doctor answer
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