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Doctor insights on: Stool Sample Test Vs Colonoscopy

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Dr. Charles Cattano
2,030 doctors shared insights

Colonoscopy (Definition)

Colonoscopy is the procedure of using a long flexible camera to visualize the entire colon from the inside with the option to take pictures, video, perform biopsies, remove polyps, etc. Generally people are sedated and do ...Read more


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Is a stool sample necessary before getting a colonoscopy?

Is a stool sample necessary before getting a colonoscopy?

No: you mean for blood? it is an alternative method for colon cancer screening, but not, it is not needed if you're getting the colonoscopy anyway. ...Read more

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Can you please tell me, should a colonoscopy show everything a stool test would?

Can you please tell me, should a colonoscopy show everything a stool test would?

The two tests: Can be complimentary and there may be some overlap but each test has the potential to show something the other does not detect. It really depends on what you mean by "stool test", there are many kinds of stool tests. ...Read more

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How accurate are the results from a colonoscopy as compared to the results from an at-home stool test?

How accurate are the results from a colonoscopy as compared to the results from an at-home stool test?

Colonoscopy better: Two stool tests available. Guaiac for blood not accurate picking up blood from hemorrhoids. Stool test for p53 gene mutation does not tell that tumor is present but that stool shows colonocytes with potential for being associated with cancer. Obviously colonoscopy which provides direct visualization of bowel most accurate with bx available ...Read more

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PCP says I need a colonoscopy due to history of compact/bloody stools. Why didn't she order a stool test? Don't they test for the same conditions?

PCP says I need a colonoscopy due to history of compact/bloody stools. Why didn't she order a stool test? Don't they test for the same conditions?

Different tests: Stool tests would'nt give the information one can get from colonoscopy, which not only provides direct visualization of your entire colonic lining of your gut, but the chance to obtain tissues for biopsies from any suspicious tissue to rule out any serious condition. Even if you may have hemorrhoids or other apparent cause for bloody stools by exam, a thorough evaluation is warranted at your age. ...Read more

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7negative stool test done at different times, have anemia, not bleeding, endoscopy negative doc still wants colonoscopy. Why when all negative?

7negative stool test done at different times, have anemia, not bleeding, endoscopy negative doc still wants colonoscopy. Why when all negative?

Bleeding can be...: ...intermittent, from any source. If there is clinical evidence that points to the GI tract as a likely source of your anemia then colonoscopy is indeed warranted. ...Read more

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Pancreatic cancer?I had a pancreatic protocol ct/hida/liver, pancreas, CBC blood test/stool test/colonoscopy.All perfect.I still have light/yellow stool

Pancreatic cancer?I had a pancreatic protocol ct/hida/liver, pancreas, CBC blood test/stool test/colonoscopy.All perfect.I still have light/yellow stool

Stop worrying: You have nothing to worry about except that fact that you are still a smoker, which i hope you'll stop. If everybody with light-colored stools consumed health-care dollars searching for pancreatic cancer, it'd be a huge waste. Evidently you're not even jaundiced. Please stop reading internet scare stuff, look for another cause of your abdominal pain ; stop reading internet scare stuff. ...Read more

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I had an annual rectal test with my physical that tested neg and also sent in stool sample which was neg. What about cologuard? Colonscopy for 2017.

I had an annual rectal test with my physical that tested neg and also sent in stool sample which was neg. What about cologuard? Colonscopy for 2017.

Colonoscopy is best: Of the screening tests you have listed, colonoscopy is the only one that can also prevent colon cancer (by removal of precancerous lesions). If you have had one before and your next one is due in 2017, you do not need any further testing until then. This should hold true especially with what sounds like you had a negative fecal immunochemical test (FIT). Hope this helps! ...Read more

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Semi solid stools for nearly 4 months doc says its IBS have done blood and stool test many time it's normal. I can't afford a colonscopy. Plz help?

Semi solid stools for nearly 4 months doc says its IBS have done blood and stool test many time it's normal. I can't afford a colonscopy. Plz help?

Check diet: Good to know that stool and blood work normal. Malformed stools and IBS is often related to digestive issues. Would avoid gluten and animal dairy for 4-6 weeks, start a probiotic with 25billion cfu, chew your food slowly and thoroughly, and include active stress reduction e.g. breathing exercises, restorative yoga, tai chi etc. If not better, try a further elimination diet e.g. FODMAPS diet. ...Read more

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Every couple weeks I get chills and nausea one day then headache and diarrhea stomach cramps weakness the next day colonoscopy stool sample blood neg?

Every couple weeks I get chills and nausea one day then headache and diarrhea stomach cramps weakness the next day colonoscopy stool sample blood neg?

Intermittent chills?: Do you have a history of recent foreign travel to an area of the world where you might have contracted malaria. It is a disease which is notorious for having people on a roller coaster of fever- no fevers. Different parts of the world have different types which are treated differently. Check CDC website for most up to date info. ...Read more

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Chronic diahrea,urges to go, abdominal pain. Colonoscopy,gastroscopy,stool test,blood test (c-reactive protein, ESR,ferritin) All normal, IBD likely ?

Chronic diahrea,urges to go, abdominal pain. Colonoscopy,gastroscopy,stool test,blood test (c-reactive protein, ESR,ferritin) All normal, IBD likely ?

Maybe: Trusting you were also checked for gluten enteropathy. I suspect you have functional bowel syndrome. It's mostly organic rather than "nerves" and can be treated. Inflammatory bowel syndrome seems unlikely. Get advice on diet, maybe meds, don't overlook the likely benefits of getting into more physical fitness stuff. Best wishes. ...Read more

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My Dr suspects IBD (due to stool sample result) - awaiting colonoscopy. Taking Doxycycline for Lyme. Am I likely to get C Diff? Currently have upper abdominal cramps, are they normal with Doxycycline?

My Dr suspects IBD (due to stool sample result) - awaiting colonoscopy. Taking Doxycycline for Lyme. Am I likely to get C Diff? Currently have upper abdominal cramps, are they normal with Doxycycline?

Not uncommon: Doxycycline needs be taken with food but even then many people have gastric upset from it. It is impossible to predict whether you will have C difficile problem but I would recommend you take a probiotic whenever you are on an antibiotic. If your stomach still bothers you , ask your doctor to Rx an alternative. ...Read more

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Constant lower pelvic pain/Painful to pass gas and stool/nausea/fatigue/ mucus in stool. colonoscopy/egd/ct scan/ /stool test normal. any ideas?

Constant lower pelvic pain/Painful to pass gas and stool/nausea/fatigue/ mucus in stool. colonoscopy/egd/ct scan/ /stool test normal. any ideas?

Constipation: You mentioned that all the test are normal. Constipation can cause nausea, fatigue, pelvic heaviness, and painful to pass stool and gas due to exertion. Drink a lot of water/fluid, increase fibers in your diet, and chew your food well before swallow. Drink a glass of slightly warm water with little salt early in the morning. Exercise regularly, everyday walk is good. Try probiotics. Consult GI doc ...Read more

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I recently had a colonoscopy test and im 24 a couple of weeks later im starting to see stringy black things in my stool could u please help?

Ift could be old : Blood. If you had biopsies taken or a polyp removed then its not uncommon to see old blood in stool. It could also reflect an upper GI source such as gastic ulcers. If you continue to experience the above then let your GI doc know. ...Read more

Feces (Definition)

Feces is the product of ...Read more