Strep Test: Throat Culture

Why It's Done

The throat culture test can help determine the cause of a sore throat. Often, a sore throat is caused by a virus, but a throat culture will determine if it's definitely caused by strep bacteria so doctors can provide proper treatment.

Preparation

Encourage your child to stay still during the procedure. Be sure to tell the doctor if your child has taken any antibiotics recently, and try to have your child avoid antiseptic mouthwash before the test as this could affect test results.

The Procedure

A health professional will ask your child to tilt his or her head back and open his or her mouth as wide as possible. If the back of the throat cannot be seen clearly, the tongue will be pressed down with a flat stick (tongue depressor) to provide a better view. A clean cotton swab will be rubbed over the back of the throat, over the tonsils, and over any red or sore areas to collect a sample.

You may wish to hold your child on your lap during the procedure to prevent movement that could make it difficult for the health professional to obtain an adequate sample.

What to Expect

Your child may have some gagging when the cotton swab touches the back of the throat. If your child's throat is sore, the swabbing may cause brief discomfort.

Getting the Results

Throat culture test results are generally ready in 2 days.

Risks

Throat swabbing can be uncomfortable, but no risks are associated with a throat culture test.

Helping Your Child

Explaining the test in terms your child can understand might help ease any fear. During the test, encourage your child to relax and stay still so the health professional can adequately swab the throat and tonsils.

If You Have Questions

If you have questions about the throat culture strep test, speak with your doctor.

Reviewed by: Yamini Durani, MD
Date reviewed: February 2012