Rectal culture

Alternative names:

culture - rectal

How the test is performed:

A cotton swab is inserted into the rectum, rotated gently, and withdrawn. A smear of the swab is placed in culture media to encourage the growth of microorganisms. The culture is observed for growth at regular intervals in the laboratory. When growth is observed, the organisms can be identified. Further tests to determine sensitivity of the organisms to antimicrobial therapy may also be carried out (see sensitivity analysis).

How to prepare for the test:

A rectal examination is done by the health care provider.

Infants and children:
The physical and psychological preparation you can provide for this or any test or procedure depends on your child's age, interests, previous experience, and level of trust. For specific information regarding how you can prepare your child, see the following topics as they correspond to your child's age:

• infant test or procedure preparation (birth to 1 year)
• toddler test or procedure preparation (1 to 3 years)
• preschooler test or procedure preparation (3 to 6 years)
• schoolage test or procedure preparation (6 to 12 years)
• adolescent test or procedure preparation (12 to 18 years)

How the test will feel:

There may be pressure as the swab is inserted into the rectum, but the test is usually not painful.

Why the test is performed:

The test is performed when gastrointestinal distress is present and infection is suspected as a cause of the distress. It may be performed when a gonorrhea infection is suspected. It may be performed as an alternative to a fecal culture if unable to obtain a feces specimen.