Occult blood 1+意思

"Occult blood 1+" is a medical term used to describe a positive result in a test for the presence of blood in the stool that is not visible to the naked eye. The term "occult" means hidden or unseen, and in this context, it refers to the fact that the blood is not visible in the stool, but is detected through a chemical or immunological test.

A grading system is often used to report the results of these tests, with "1+" indicating a weakly positive result. This means that the test has detected the presence of blood, but in lower amounts than would be seen with a higher grade, such as "2+" or "3+."

The presence of occult blood in the stool can be a sign of gastrointestinal bleeding, which may be caused by a variety of conditions, including ulcers, inflammatory bowel disease, colon cancer, or hemorrhoids. Further investigation is typically needed to determine the cause of the bleeding.