Multidrug-resistant Gram-negative bacteria (MRGN) Test

This throat swab test screens for colonisation with multidrug-resistant Gram-negative bacteria, including carbapenemase-producing organisms. It suits people being admitted to or discharged from healthcare settings.

Sample
Swab
Collection
Oral swab sample at clinic or nurse visit
Results in
5 days
Biomarkers
1
Tests for
  • MRGN - throat

Test specifications

Provider
Better2Know
Sample type
swab
Collection method
oral swab sample at clinic or nurse visit
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 - throat

About this test

Multidrug-resistant Gram-negative (MRGN) bacteria, including carbapenemase-producing organisms, resist many commonly used antibiotics. This test uses a throat swab to check for colonisation, which can happen without symptoms but is relevant before hospital admission or discharge, or in settings with a known outbreak. A positive result flags colonisation for infection control purposes rather than diagnosing an active infection.

There is no comparison group listed for this test, so we cannot benchmark it against a direct peer. Against the wider set of immunity and infection tests we track, £239 sits well above the £129 median for that category.

The scores reflect a clearly presented listing and strong collection convenience, since a home nurse visit is offered alongside the clinic option. It loses marks on price, which runs well above the category median, and on results and follow-up, because it is not doctor-reviewed as standard.

Who is it for?

This suits people being admitted to or discharged from a hospital or care facility, those with recent antibiotic use or recurrent infections, or anyone monitoring infection control after exposure to a known MRGN outbreak. There is no comparison group listed for this test, so if price is the deciding factor, it is worth checking whether a lower-cost throat swab from another provider covers the same organisms.

How it works

A throat swab is taken either at a clinic or during a home nurse visit. It is sent to the laboratory and cultured to check for multidrug-resistant Gram-negative bacteria, including carbapenemase-producing organisms. Results are typically available within five days through your online patient area. The sheet does not state that results are doctor-reviewed as standard.

Pros & cons

Pros

  • Home nurse visit offered as an alternative to a clinic swab.
  • Screens for carbapenemase-producing organisms as well as other MRGN bacteria.
  • Full description, biomarker and turnaround are all published upfront.

Cons

  • £239 is around 85% above the £129 median for similarly sized immunity tests we track.
  • No standard doctor review of your result is included.
  • No comparison group listed, so it is hard to benchmark against a peer.

Our editorial score

Compare Health Test Score MRGN throat swab, priced well above category median
Editorial confidence: 9.0/10

This throat swab checks for colonisation with multidrug-resistant Gram-negative bacteria, with a home nurse visit option and results in five days. At £239 it sits well above the £129 median for the immunity tests we track, and results are not doctor-reviewed as standard.

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 4.0/10

    A swab sample taken at a clinic; a home nurse visit is offered; 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 2.2/10

    £239.00 against a median of £129.00 for the 79 similarly sized immunity tests we track (+85%).

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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