Wound Culture

Does this test have other names?

Wound culture and sensitivity

What is this test?

This test looks for bacteria or other organisms in a wound. The test is used to find out if a wound is infected. It can also see the type of organism that's causing the infection. This helps doctors determine the correct treatment plan.

This test is done with a small sample of tissue or fluid from a wound. The sample is collected and sent to the lab. It is then put into a small dish with a substance that helps organisms grow. This is known as a culture. After a period of time, the dish is checked to see what is growing.

An infected wound may need treatment, such as antibiotics. The antibiotics stop the infection and keep it from spreading to other areas of the body. Treating the infection also helps the wound heal.

Why do you need this test?

You may need this test if your doctor thinks that your wound is infected or if you were bitten by an animal, insect, or person.

Symptoms of an infected wound include:

• Redness.

• Swelling or a new lump under the skin.

• Pain.

• Pus or bad-smelling fluid draining from the wound.

• Skin around the wound that feels hot to the touch.

• Bumps near the wound that look like boils, pustules, spider bites, or a rash.

A severe infection may also cause:

• Tiredness.

• Confusion.

• Fever.

• Chills.

What other tests might you have along with this test?

You may also have other tests, including:

• Blood tests to check liver function, blood proteins, and blood sugar.

• Complete blood count (CBC).

• Urine tests.

What do your test results mean?

Test results may vary depending on your age, sex, health history, and other things. Your test results may be different depending on the lab used. Ask your doctor what your test results mean for you.

A negative result means that no organisms grew in the culture from your wound. A positive result means that bacteria or other organisms did grow and that your wound is infected. From your test results, your doctor can figure out the best antibiotic to treat it.

How is this test done?

This test is done with a sample of the fluid or tissue from a wound. Your doctor will carefully clean the wound and flush out any dirt. Then they will collect a sample from the wound. If the wound isn't oozing, your doctor may moisten a swab with a sterile saline solution to collect the sample.

Does this test pose any risks?

This test poses no known risks.

What might affect your test results?

The wound culture may be less accurate if you are already taking antibiotics before the culture is done.

How do you get ready for this test?

You don't need to prepare for this test. But be sure your doctor knows about all medicines, herbs, vitamins, and supplements you are taking. This includes medicines that don't need a prescription and any illegal drugs you may use.