MRGN - Rectal Swab

A rectal swab test screening for multidrug-resistant Gram-negative bacteria (MRGN), including carbapenemase-producing organisms, commonly used for infection-control screening around hospital admission or discharge.

Sample
Swab
Collection
Swab sample at clinic
Results in
5 days
Biomarkers
1
Tests for
  • MRGN - rectum

Test specifications

Provider
Better2Know
Sample type
swab
Collection method
swab sample at clinic
Turnaround time
5 days
Biomarkers tested
1
At-home test
No
Doctor reviewed
No
Gender focus
Both

What's tested

1 biomarker as listed by Better2Know.

  • MRGN - rectum

About this test

This test uses a rectal swab to check for colonisation by multidrug-resistant Gram-negative bacteria (MRGN), including carbapenemase-producing organisms. These bacteria resist multiple antibiotics and are of particular concern in hospital and care settings, where screening helps identify carriers before an infection develops or spreads to others.

There is no comparison group recorded for this specific test, but among similarly sized immunity tests we track, its single biomarker places it in the 36th percentile for clinical depth. At £199, it is priced 54% above the £129 median for tests of similar size.

The listing sets out what the swab tests for and how the process works. It scores lower on results and follow-up, since results are not reviewed by a doctor as standard, and turnaround is on the slower side, at up to 5 working days.

Who is it for?

This suits people who need to demonstrate they are not carrying multidrug-resistant Gram-negative bacteria, for example before or after a hospital admission, or as part of infection-control screening in a healthcare or care setting.

It is not designed for general symptom investigation. If you have symptoms of an active infection rather than a need for carrier screening, discuss this with a GP rather than relying on this test alone.

How it works

A trained professional takes a rectal swab sample at a Better2Know clinic. The swab is sent to the laboratory, where it is cultured and analysed for multidrug-resistant Gram-negative bacteria, including carbapenemase-producing organisms. Results are typically available within 5 working days. The provider does not state that results are reviewed by a doctor as standard.

Pros & cons

Pros

  • Screens specifically for carbapenemase-producing and other multidrug-resistant bacteria.
  • Clear listing covering what is tested and how the swab process works.
  • Useful for infection-control screening around hospital admission or discharge.

Cons

  • At £199, this costs 54% more than the £129 median for similarly sized immunity tests we track.
  • Results take up to 5 working days.
  • No standard doctor review of your MRGN results.
  • Only available via a clinic swab, not as a home kit.

Our editorial score

Compare Health Test Score Infection-control swab priced above typical immunity tests
Editorial confidence: 9.0/10

This rectal swab screens for multidrug-resistant Gram-negative bacteria, including carbapenemase producers, taken at a Better2Know clinic. At £199, it costs 54% more than the £129 median for similarly sized immunity tests we track, and results take up to 5 working days.

Score breakdown

  • Clarity and documentation 9.0/10

    The listing publishes a detailed 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 3.0/10

    A swab sample taken at a clinic; results in around 5 days, slower than similar tests.

  • Results and follow-up 3.0/10

    Results are not doctor-reviewed and no consultation is included; the provider does not describe the report format.

  • Trust signals 6.5/10

    Trustpilot 4.2 from 775 reviews; CQC registered; trading 18+ years.

  • Value for money 3.8/10

    £199.00 against a median of £129.00 for the 79 similarly sized immunity tests we track (+54%).

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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