Final answer:
Individuals without high risk factors generally begin routine occult blood testing for colorectal cancer at middle age, often starting at age 50, and continue annually. Method selection and testing frequency should be personalized based on discussions with a healthcare provider.
Step-by-step explanation:
Occult blood testing is a screening tool for colorectal cancer and other digestive system ailments. It is recommended that individuals start routine screening at middle age, which often means starting at age 50, unless there is a family history of colorectal cancer or other risk factors that might necessitate earlier testing. Your medical provider can give you the best advice on when to start screening based on current cancer guidelines and your personal or family health history. Screening frequency might vary, but generally, if you are using a fecal occult blood test (FOBT), it is recommended to do this annually.
There are several methods for screening, and each has its own advantages and disadvantages. These need to be discussed with your healthcare provider to determine the most suitable method for you. Microscopic evaluation of blood smears and using a cell counter can help in identifying infection by stealth microbes that may affect the blood cells, but this is a distinct process from screening for colorectal cancer. Recording results of tests accurately is essential in any screening or testing procedure.