Skin Cancer Foundation. http://visualsonline.cancer.gov/about.cfm. The ABCDEs of melanoma skin cancer are: 1  Asymmetry. One half doesn't match the appearance of the other half.  Border irregularity. The edges are ragged, notched, or blurred.
Effects of Hemolysis on Clinical Specimens. Hemolysis due to the breakdown of red blood cells is important to the laboratory because it can have an effect on laboratory results. The effects can be the result of products liberated from the red cells themselves, or due to interferences with laboratory analyzers.
Fecal occult blood tests also screen for colorectal cancer. They look for blood in stool, but cancerous polyps do not always cause bleeding, so they are limited in their ability to detect all cancers. These types of tests may be less invasive, but they also are less accurate than colonoscopy.