What it means
The standard specimen preservative, usually 10% neutral buffered formalin. It stops tissue from breaking down so the pathologist can examine it under a microscope. Some specimens must not go in formalin, such as tissue for culture, frozen section or certain special tests; they go to the lab fresh or in another solution, as ordered. Formaldehyde is toxic and can cause cancer.
For the nurse
Check the order and the surgeon's instructions before putting a specimen in formalin, since it cannot be undone. Label every container correctly, wear gloves and eye protection, and close containers tightly.
Related terms
surgical technologist
A member of the operating room team who prepares the sterile field and instruments and hands them to the surgeon.