On microscopic exam, there will be no red blood cells present (other than in the very unlikely situation of having two health issues occurring simultaneously). (2ndchance.info)
Adult dogs are typically wormed when specific parasites are found on microscopic exam of stool samples, except in cases of bloody diarrhea where whipworms are suspected, since these parasites are difficult to diagnose on many stool samples. (1800petmeds.com)
An accurate diagnosis of neutrophilic cholangitis requires exam and culture of bile since microscopic exam of biopsied liver tissue is nonspecific. (texaswestveterinarian.com)