Group B Strep Test—Protect Your Baby During Birth

Simple swab test to detect Group B Streptococcus (GBS) bacteria in late pregnancy. In rare situations, it can lead to serious infections in your baby but knowing your status before labor means you can receive antibiotics if needed to protect your newborn.
  • Purchase in clinic

  • Simple swab home test kit

  • Results in 3-5 days

Group B Strep Test

Testing for Group B Streptococcus bacteria in late pregnancy to prevent newborn infection. GBS is carried by 20-40% of pregnant women and is harmless to you, but can very rarely cause serious infection in newborns if passed during birth, syuch as sepsis, pneumonia, or meningitis. The NHS doesn’t routinely test (hospital dependent – please ask your hospital), but knowing your status allows you to receive antibiotics during labor if needed. Test between 35-37 weeks for most accurate results. Simple vaginal and rectal swab you collect yourself in private. Results in 3-5 days with clear guidance for your birth team.

  • From

    0 weeks
  • Duration

    0 minutes
  • Price

    £55

  • Results

    3-5 Days

Protect your baby during birth

Know your GBS status so you can receive antibiotics if needed

  • Protect Your Newborn

    Knowing your GBS status allows treatment during labor to prevent baby infection
  • Fast Results

    Know your status before labor with results in 3-5 days
  • Simple Swab Collection

    Quick, easy vaginal and rectal swab you can do yourself in private
  • Recommended Testing Time

    Test between 35-37 weeks for most accurate results
  • Inform Your Birth Team

    Take results to hospital so they can provide antibiotics if you're positive
  • NHS Doesn't Routinely Test

    Private testing gives you the information NHS doesn't provide. A quick and affordable test to avoid risk of severe illness.

Complete Service Overview

Your Group B Strep Test—Explained

A simple swab test between 35-37 weeks that can significantly reduce the risk of serious infection in your newborn. GBS is not routinely offered on the NHS, but testing within 5 weeks of delivery allows time for preventative antibiotics during labour.

  • What's Included
    • Home collection swab kit
    • Laboratory analysis for Group B Streptococcus
    • Kit available for clinic pickup only
  • Who is this for?
    • Pregnant women at 35-37 weeks gestation
    • Those wanting to know their GBS status before labour
    • Women with a history of GBS in a previous pregnancy
    • Those planning a home birth or birth centre delivery
    • Anyone seeking peace of mind about newborn infection risk
  • Technical Details
    • Tests for Group B Streptococcus bacteria
    • Optimal testing window: 35-37 weeks gestation
    • GBS can cause sepsis, pneumonia, or meningitis in newborns
    • Risk increases with premature birth, maternal fever, or prolonged rupture of membranes
    • Positive result allows antibiotics to be given during labour

What to expect

Your appointment, step by step

  • Before Your Test

    • Purchase your test kit in the clinic during your third trimester
    • Test at around 35-37 weeks of pregnancy
    • No special preparation needed
    • Follow the instructions in the test kit
  • During your test

    • Take the test in the comfort of your home
  • After your test

    • The test kit comes with a pre paid royal mail envelope – just post it at the closest post office
    • Results within 3-5 days via email directly from the laboratory
    • If positive, discuss with your midwife or birth team

Why choose Flowan Health

The NHS doesn't routinely test for GBS, leaving many women without vital information. If you carry GBS, most of the time your baby will be born 

safely and will not develop an infection. However, it can rarely cause serious infection such as sepsis, pneumonia or meningitis. Our testing gives you the knowledge to protect your baby from avoidable severe infection during birth.

What you get

What this means for you 

Access testing the NHS doesn't provideGet the information to make informed decisions about your birth
Results in 3-5 daysKnow your status before labor
Tested between 35-37 weeksAccurate results close to your due date
Clear result letterTake to hospital to inform your care
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Common questions about Group B Strep testing

Protecting your baby in late pregnancy? Here's what you need to know.

  • What is Group B Strep?

    Group B Streptococcus (GBS) is a common bacteria carried by 20-40% of women in their vagina or rectum. It’s harmless to you but can rarely cause serious infection in newborns if passed during birth. Antibiotics during labor can prevent this.

  • Can I still have a water birth if I'm GBS positive?

    This depends on your hospital’s policy. Some hospitals offer IV antibiotics and allow water birth, others have restrictions. Knowing your GBS status ahead of time lets you discuss options with your midwife or consultant before labor starts.

  • Is the test uncomfortable?

    Not at all. You’ll collect the swab yourself in a private room. It’s a quick vaginal swab followed by a rectal swab (just inside, not deep). Takes less than a minute and you have complete privacy and control.

  • What happens if I test positive?

    If positive, discuss with your maternity care provider who should offer you antibiotics during labor (usually when your waters break or when labor is established). This reduces the risk of baby developing GBS infection from around 1 in 300 to about 1 in 3,000. You can still have the birth you want.

  • When should I have the test?

    Between 35-37 weeks of pregnancy is ideal. Testing too early means your status might change before labor. Testing in this window gives you accurate information close to your due date.

  • Why doesn't the NHS routinely test for GBS?

    The NHS doesn’t routinely screen because GBS carriage comes and goes—you could test negative one week and positive the next. They treat women with risk factors instead. Private testing gives you information to make an informed decision about your birth.


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