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Occult blood in stool is impossible to see with the naked eye and requires a fecal occult test that detects hidden blood in feces sample, according to WebMD. Sometimes people can see blood in their stool, however. More »

www.reference.com Health Conditions & Diseases

Bright red blood in the stool can be an indication of several conditions, including an anal fissure, polyps, diverticula, Crohn's disease, hemorrhoids, ulcerative colitis, angiodysplasia and cancer, among other condition... More »

www.reference.com Health Pain & Symptoms

Hemorrhoids, anal fissures, diverticulosis and colon polyps are the most common causes of blood in the stool, as confirmed by MedicineNet. Blood in the stool ranges in color from bright red to black. More »

www.reference.com Health Pain & Symptoms
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A rheumatoid arthritis blood test may determine the concentration of rheumatoid factors that a patient has in his blood, as stated by WebMD. One common blood test for rheumatoid arthritis is the rheumatoid factor test. More »

www.reference.com Health Conditions & Diseases

Clostridium difficile is very contagious because the spores, which are found in the feces, are capable of living on dry surfaces for an extended time, according to WebMD. Another person can become infected with Clostridi... More »

www.reference.com Health Conditions & Diseases

To use a colon test kit, follow any dietary restrictions for three days before beginning the test, collect a stool sample using an enclosed collection stick, and apply it to the test card, according to the American Cance... More »

www.reference.com Health Diagnostics & Imaging

Testing for candida is accomplished by participating in either a saliva test, blood test, vaginal swabs or stool samples, according to the Cambridge Nutritional Sciences Ltd. The Candida Support organization also offers ... More »

www.reference.com Health Conditions & Diseases