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Doctor insights on: Is It Possible To Have A Thryoid Cancer With Negative Blood Results

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Is it possible to have cancer and have normal blood test results?

Is it possible to have cancer and have normal blood test results?

Yes: Many cancers will not cause changes to the blood counts or chemistry panels. This is one of the reasons why routine screenings with your physician are important. ...Read more

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Dr. Barry Rosen
4,348 doctors shared insights

Cancer (Definition)

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


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Is it possible to have bone cancer with normal blood tests?

Is it possible to have bone cancer with normal blood tests?

Yes possible: Bone cancers may not show in the blood or will show in late stage only. ...Read more

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Is it possible for you to have lymphoma with normal blood tests?

Is it possible for you to have lymphoma with normal blood tests?

Yes: Some lymphomas will have essentially normal blood test (CBC) results. Leukemias, on the other hand will often have abnormal blood test results. ...Read more

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Help! Is it possible to have ibd with normal blood test results?

Help! Is it possible to have ibd with normal blood test results?

Yes: Inflammatory bowel disease is a chronic inflammatory process in the lining of the intestinal tract. It does not directly cause any significant changes in the blood so blood tests are usually normal. If a patient had very bad bleeding or diarrhea from the IBD, this could cause changes in the blood counts (CBC), but less symptomatic cases of IBD would probably not show any blood abnormality ...Read more

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Is it possible to have an infection and have negative results on blood tests?

Is it possible to have an infection and have negative results on blood tests?

Yes: But this depends upon the type of infection to which you are referring and the type of blood tests you have undergone. If you are referring to blood cultures, it is very common for these to be negative in the presence of many forms of infections, and the reasons are quite complex. ...Read more

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Is it possible to have TB with a negative skin test?

Is it possible to have TB with a negative skin test?

Yes: If the test is done early in the disease, the body will not have had time to develop the factors that make the test turn positive. Repeat testing a few months later would show positive. ...Read more

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Is it possible to tell is you have cervical cancer or other reproductive organ cancer with a blood test?

Is it possible to tell is you have cervical cancer or other reproductive organ cancer with a blood test?

Mostly no: There are no reliable blood markers for cervical cancer. The tumor marker ca125 is often an indicator of ovarian cancer, but it is not very sensitive and not very specific. It is used as a screening test in some circumstances, and to follow the effects of therapy when it has been documented to be high at the start. There are no blood markers that are good for endometrial cancer, either. ...Read more

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Does a intestinal or colon cancer show in a blood test thru the WBC ? And if there is no bleeding is it possible to be cancer?

Does a intestinal or colon cancer show in a blood test thru the WBC ? And if there is no bleeding is it possible to be cancer?

No and yes: There is a blood test that we use in colon cancer, however it is not advised for screening. There can be colon cancer without bleeding. Only 25% of colon cancers present with bleeding. ...Read more

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Is it possible to have lymphoma for 3 years with no blood work abnormalities?

Yes: There different subtypes of lymphoma and it is possible to have normal blood counts if you have enlarged lymph nodes see your primary care physician for work up. ...Read more

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Is It possible to have a negative throat and sinus culture but have high levels of strep in a blood test. What are the possible implications?

Is It possible to have a negative throat and sinus culture but have high levels of strep in a blood test. What are the possible implications?

See below: The negative cultures mean you did not have an bacterial infection in your sinus or throat. The "high levels of strep in the blood" does not refer to actual streptococci bacteria in the blood. It refers to the level of a specific antibody that the immune system makes to defend itself from a bacterial infection. A high ASO level means you may have had an infection with strep in the past 6-12 months ...Read more

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Two negative blood test for celiac disease is it possible to still have it and it be the cause of bone loss? How do i test and make sure 100%

Two negative blood test for celiac disease is it possible to still have it and it be the cause of bone loss? How do i test and make sure 100%

There's no 100%: The labs are probably not totally sensitive / specific but they're pretty good. Have you had a biopsy? This is one to work out with your physician. Bone loss won't be the primary manifestation of celiac disease despite "pop" wisdom. "Low blood pressure" isn't an illness. A full workup, including some zebras like porphyria or other neuropathies, may be a consideration along with supportive Dr. ...Read more

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Cryptococcus: a few q's: how hard is it to be diagnoses with this fungus? Would all blood tests be positive, or could a false positive be LIKELY?

Cryptococcus: a few q's: how hard is it to be diagnoses with this fungus? Would all blood tests be positive,  or could a false positive be LIKELY?

Cryptococcus: The usual species is C. neoformans. Encapsulated strains are diagnosed by detection of cryptococcal antigen in CSF, sputum and urine. Blood cultures may be positive. India ink of the CSF is a microscopic method of diagnosis. Diagnosis may be more difficult if infected with C. gatti or a non-encapsulated strain but this is very uncommon. False negative results are also rare. ...Read more

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Is it possible to have parasites in your gut and still have a negative result on a stool test?

Is it possible to have parasites in your gut and still have a negative result on a stool test?

No perfect test...: There is definitely no perfect test yet invented. Tests can fail to reveal the correct diagnosis for different reasons so a diagnosis could be potentially missed. However the possibilities are low when the tests has been done properly.In this case the possibilities of making the correct diagnosis are better when three stool samples are collected and the test is specific for parasites. ...Read more

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Is it possible to have a (starting) renal dysfunction even if creatinin in blood serum is normal? What are symptoms? And how to test for it?

Is it possible to have a (starting) renal dysfunction even if creatinin in blood serum is normal?  What are symptoms? And how to test for it?

Early renal injury: Yes. Serum creatinine does not reveal kidney impairment until 25-35 percent of function is lost. The doc orders a 24 hr urine creatinine clearance to get an accurate percent function. ...Read more

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Is it possible for someone with vulnerable (soft) plaques to have a negative treadmill stress test, but still be in danger?

Is it possible for someone with vulnerable (soft) plaques to have a negative treadmill stress test, but still be in danger?

Yes: It's entirely possible - this is, in fact,the explanation for how someone can have a normal stress test and then have a heart attack hours, days, or weeks later: presumably there is no serious blockage at the moment of the stress test, but they rupture a plaque and occlude the vessel at a later time. This is a sad reality. We have no "crystal balls" to predict the future. ...Read more

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Dr called with a "not 100% sure but positive you have Lyme disease" diagnosis from bloodwork. How is this possible?

Dr called with a "not 100% sure but positive you have Lyme disease" diagnosis from bloodwork. 
How is this possible?

Difficult diagnosis: I agree that "not 100% sure" and "positive" are in conflict; you'll have to clarify with the doctor. However, diagnosing Lyme disease by blood test can be difficult; the available tests are notoriously unreliable. For these reasons, Lyme is often blamed for nonspecific sypmtoms caused by other things. Before getting into prolonged Rx, request consultation with an infectious disease specialist. ...Read more

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Is it possible to have ovarian cancer and have a normal ca 125 blood test?

Is it possible to have ovarian cancer and have a normal ca 125 blood test?

Yes.: Ca125 can vary from person to person and can change under various circumstances not related to cancer. It is more useful as a way to track disease progression or treatment success. ...Read more

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Dr. Creighton Wright
13 doctors shared insights

Thyroid (Definition)

The thyroid is an endocrine gland that sits in the lower part of the neck. It produces thyroid hormone - which ...Read more