Group B Strep

Tests for Group B Strep bacteria using a vaginal and rectal swab, usually taken between weeks 35 and 37 of pregnancy to check a mother's GBS status before birth.

  • At-home test
  • Doctor reviewed
Sample
Swab
Collection
At-home swab sample by post
Results in
3 days
Biomarkers
1
Doctor reviewed
Yes
Tests for
  • Group B Strep

Test specifications

Sample type
swab
Collection method
at-home swab sample by post
Turnaround time
3 days
Biomarkers tested
1
At-home test
Yes
Doctor reviewed
Yes
Gender focus
Both

What's tested

1 biomarker as listed by Blue Horizon Medicals.

  • Group B Strep

About this test

Group B Strep (GBS) is a bacterium many people carry without symptoms, but if present in a pregnant woman around the time of birth it can be passed to the baby. This test uses a vaginal swab and a rectal swab, sent from home, to check for GBS colonisation, usually timed for weeks 35 to 37 of pregnancy so the result is current when labour is close.

We do not currently track other GBS swab tests to compare price or depth against, so this review considers it on its own terms. It scores well for value for money, at £88.25 against a median of £144.25 across the 79 similarly sized immunity and infection tests we track, a saving of around 39%. Documentation is solid: the listing states the sample type, collection method and a 3-day turnaround, though it does not describe what the report itself looks like.

Results and follow-up score highly because a doctor reviews the results as standard. Collection convenience is respectable rather than exceptional, reflecting the need to collect two separate swab samples at home within the recommended pregnancy window.

Who is it for?

This suits pregnant women who want to check their Group B Strep status from home, ideally during weeks 35 to 37, using a postal vaginal and rectal swab rather than an in-clinic appointment. It fits well if you are comfortable following written instructions to collect both swabs yourself and want a doctor-reviewed result within 3 days.

We do not currently track other GBS swab tests for comparison, so we cannot say whether a cheaper or more convenient alternative exists elsewhere.

How it works

You collect two swabs at home, one vaginal and one rectal, following the provider's instructions, and post them to the lab. Results are returned within 3 days and reviewed by a doctor before you receive them.

Pros & cons

Pros

  • Both swabs are collected at home and posted to the lab
  • Doctor-reviewed results within 3 days
  • Priced 39% below the median for similarly sized immunity and infection tests we track

Cons

  • Requires collecting two separate swabs yourself, which some may find awkward
  • The provider does not describe what the results report looks like
  • No comparable GBS tests tracked yet, so value cannot be benchmarked in this category

Our editorial score

Compare Health Test Score Pregnancy screening swab with fast 3-day results
Editorial confidence: 10.0/10

This is an at-home swab test for Group B Strep, taken as a vaginal and rectal sample and best done between weeks 35 and 37 of pregnancy. It costs £88.25, results come back in 3 days, and a doctor reviews them. There are no directly comparable tests in our database yet, so we cannot say how the price compares with alternatives.

Score breakdown

  • Clarity and documentation 8.0/10

    The listing publishes a short description, the full biomarker list, a stated turnaround, clear collection options, the sample type; it does not state what the report looks like.

  • Clinical depth 6.6/10

    1 biomarkers, placing it in the 36th percentile of immunity tests we track.

  • Collection convenience 8.0/10

    A swab sample you take at home, no needle; results in around 3 days, in line with or faster than similar tests.

  • Results and follow-up 7.0/10

    Results are reviewed by a doctor; the provider does not describe the report format.

  • Trust signals 7.5/10

    Trustpilot 4.2 from 395 reviews; accredited lab (UKAS ISO 15189 partner labs); trading 17+ years.

  • Value for money 8.4/10

    £88.25 against a median of £144.25 for the 79 similarly sized immunity tests we track (-39%).

Calculated 13 September 2026 from the facts we hold about this test and provider, using our published scoring formula. Scores are not hand-edited.

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