![](https://webarchive.library.unt.edu/web/20080925104347im_/http://www.nci.nih.gov/images/spacer.gif) |
|
![](https://webarchive.library.unt.edu/web/20080925104347im_/http://www.nci.nih.gov/images/spacer.gif)
![](https://webarchive.library.unt.edu/web/20080925104347im_/http://www.nci.nih.gov/images/spacer.gif)
| Immunoassay fecal occult blood test. A test to check for blood in the stool. A brush is used to collect water drops from around the surface of a stool while it is still in the toilet bowl. The samples are then sent to a laboratory, where they are checked for a human blood protein. Blood in the stool may be a sign of colorectal cancer. Also called immunochemical fecal occult blood test, immunologic fecal occult blood test, and immunoassay fecal occult blood test. |
![](https://webarchive.library.unt.edu/web/20080925104347im_/http://www.nci.nih.gov/images/spacer.gif)
![](https://webarchive.library.unt.edu/web/20080925104347im_/http://www.nci.nih.gov/images/gray_spacer.gif)
![](https://webarchive.library.unt.edu/web/20080925104347im_/http://www.nci.nih.gov/images/spacer.gif)
|
![](https://webarchive.library.unt.edu/web/20080925104347im_/http://www.nci.nih.gov/images/spacer.gif) |