Gbs Pregnancy Swab

GBS Pregnancy Swab

GBS, or Group B Streptococcus, is a common bacterium found in the gastrointestinal and lower genital tracts of pregnant women. A GBS pregnancy swab is a test that is routinely offered to pregnant women in their third trimester to identify if this bacterium is present. This information helps doctors determine the risk of infection for the mother and baby during labor, and the best course of action for the health of both.

What is GBS?

Group B Streptococcus is a bacteria that can be found in the intestines and lower reproductive tract of pregnant women. It presents no symptoms and is harmless in most cases, but it can cause infections that can be dangerous to a newborn if transmitted during labor.

Who is At Risk?

GBS is most common in women who have had a urinary tract infection (UTI) during pregnancy, who have tested positive for GBS in a previous pregnancy, or who are pregnant with twins or other multiple births.

What Does the Test Involve?

The GBS pregnancy swab is conducted in the third trimester of pregnancy. The test consists of inserting a sterile, long cotton swab into the vagina and rectum to collect bacteria. The swab is then sent to a laboratory to be analyzed. Results are returned to the physician in approximately three days.

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What if the Test is Positive?

If the swab tests positive for GBS, the doctor may prescribe antibiotics during labor. This ensures that the mother and baby are protected against any potential infection and is the best course of action to ensure healthy labor and delivery.


The GBS pregnancy swab is an important test for pregnant women that helps identify the presence of GBS, determine risk of infection during labor, and create the best health plan for both mother and baby. Knowing your GBS status is an important step in ensuring the health of both you and your baby during this important time.

What is Gbs Pregnancy Swab?

Group B Strep (GBS) is a common type of bacteria found in the human intestine. It is usually harmless and not transmitted from person to person; however, it can cause infection in unborn babies if it is passed through the mother’s birth canal. To help protect babies from GBS infection, healthcare providers perform a physical exam and do a GBS Pregnancy Swab test during the last weeks of pregnancy.

How is a GBS Pregnancy Swab Performed?

The GBS swab is a cervical swab that is performed at 35 to 37 weeks of gestation. It consists of a cotton swab placed into the vagina and the rectum to collect bacteria for testing. A laboratory will then analyze the sample for the presence of GBS.

Why is it important?

GBS can cause severe infections in newborns, including meningitis and sepsis. This is why it is important to detect GBS early in the pregnancy so doctors can take steps to protect infants during delivery. Babies whose mothers test positive for GBS will likely need antibiotics during labor, as this has been shown to reduce the risk of GBS infection by 80 to 100 percent.

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What are the risks?

The GBS Pregnancy Swab is a safe and simple procedure with no risk of harm to either the mother or the baby.

What are the benefits?

The benefits of a GBS Pregnancy Swab include:

  • Early Detection – GBS can be detected in pregnant women months before delivery, allowing for early and proactive treatment.
  • Protection for the Newborn – Detecting GBS in pregnant women allows healthcare providers to take steps to protect the baby during delivery.
  • Peace of Mind – Knowing that GBS is not present can give expectant mothers peace of mind during labor and delivery.

In conclusion, a GBS Pregnancy Swab is a safe, simple, and reliable way to detect GBS in pregnant women. Early detection of GBS can help protect newborns from infection, and give pregnant women peace of mind.

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