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An oral swab culture checks the mouth for organisms such as Candida yeast or unusual bacteria. It is booked for white patches, persistent soreness, cracked mouth corners or infections that have not responded to treatment.
A sterile swab is wiped over the affected area of the mouth, such as the tongue, inner cheek or gums. The laboratory cultures the sample to see which organisms grow, separating the normal mixture of mouth bacteria from anything that should not be there in large numbers. Yeasts such as Candida can be identified.
The mouth naturally contains many different microbes, so the value of the test lies in spotting an overgrowth or a specific organism linked to symptoms. Oral thrush is more likely after antibiotics, with steroid inhalers, dentures, diabetes or a weakened immune system, and a culture can confirm it when the picture is unclear or treatment has not worked.
The price includes your sample at our Chiswick clinic, analysis at the Randox accredited laboratory, a review of your result with an Omnia practitioner, and a GP feedback report on request.
The report describes what grew and whether it is considered significant. A note of mixed oral flora usually means only the normal mouth organisms were seen. If Candida or a specific bacterium is identified, your practitioner explains whether it fits with your symptoms and whether treatment should be discussed with your GP or dentist.
An oral culture cannot explain every mouth symptom. Ulcers, burning mouth and dryness can relate to nutrition, medicines, skin conditions or the immune system, so a finding is read in context and is not a diagnosis by itself. A mouth ulcer that has not healed after three weeks, or a lump or patch that will not go away, should be checked by your GP or dentist.
Please do not eat, drink, smoke, brush your teeth or use mouthwash for at least an hour before your swab, so the sample reflects what is living in your mouth. If you wear dentures, bring them with you. Let us know about any antifungal or antibiotic treatment you have used recently, as it can affect what grows.
Repeated oral thrush can be linked to blood sugar, so HbA1c is a useful companion check, and a sore tongue can also reflect low Vitamin B12 or iron. See every blood test and price in Chiswick for more options.
The oral swab culture is £139 at Omnia Lifestyle in Chiswick. The fee includes the swab at our clinic, culture at the accredited laboratory, a review of the findings with a practitioner, and a GP feedback report on request.
Yes, the culture can identify Candida species. Because some Candida lives in many healthy mouths, your practitioner considers the amount grown and your symptoms before suggesting it is the cause.
Usually not. Most recurrent ulcers are not caused by infection, so a culture is more useful for thrush or suspected bacterial infection. Blood tests for nutrients may be more helpful for ulcers.
For gum disease, tooth pain or an abscess, a dentist is the right first step. The culture is helpful alongside dental care when an infection is not clearing as expected.