Immunohistochemistry (IHC) is a lab technique pathologists use to look for signs of disease in a tissue sample. A pathologist uses lab tests to diagnose medical conditions

As part of your diagnosis, a healthcare provider may remove tissue and send it to a lab for testing. For example, they may remove part of a tumor and send it to a lab to test for cancer cells. This is called a biopsy. An IHC is just one method a pathologist may use to study the sample once it arrives at the lab

IHC is the most common type of immunostaining. Immunostaining involves using antibodies and special markers to “label” parts of a tissue sample so they’re easier for pathologists to identify