Skin or mucosal biopsy culture

Alternative names:

culture - skin or mucosal biopsy; mucosal or skin biopsy

How the test is performed:

A small piece of skin or mucous membrane is obtained and placed in culture media in the laboratory. It is observed for the growth of colonies of microorganisms. When growth is observed, the microorganisms are identified and classified.

How to prepare for the test:

The preparation is the same as for a skin biopsy. See also Gum biopsy.

How the test will feel:

A sample of skin or mucus membrane can be taken by 1 of 3 methods: a shave biopsy (scraping or shaving a thin layer), a punch biopsy (using a needle or punch to obtain a small, but deeper, sample), or an excision of tissue (cutting to remove a piece of tissue). You will be given local anesthesia to numb the site.

Why the test is performed:

The test may be performed as part of the diagnosis of chronic infections of the skin or mucous membranes.