Clostridium Difficile Toxin by PCR
Private Clostridium Difficile Toxin by PCR test in London for £239.99, detecting toxigenic C. difficile DNA with results expected in around 2 business days.
Turnaround time
2 business days
Biomarkers count
1
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Overview of the Clostridium Difficile Toxin by PCR
The Clostridium Difficile Toxin by PCR test is a molecular stool test used to detect toxigenic Clostridioides difficile, historically known as Clostridium difficile.
The test contains 1 biomarker: Clostridium Difficile Toxin by PCR.
C. difficile is a bacterium capable of colonising the colon.
Certain strains carry genes responsible for producing toxins that damage the intestinal lining and can cause inflammation ranging from relatively mild diarrhoea to severe colitis.
C. difficile infection is particularly associated with recent antibiotic exposure, because antibiotics can disrupt the normal intestinal microbiome and allow C. difficile to proliferate.
Risk can also be increased by recent hospital or healthcare exposure, older age, immunosuppression and previous C. difficile infection.
PCR detects genetic material associated with toxigenic C. difficile, rather than directly measuring the amount of free toxin protein present in stool.
This distinction is important.
A person can carry toxigenic C. difficile without having active toxin-mediated disease.
For this reason, PCR is most clinically meaningful when performed in someone with compatible diarrhoea or other appropriate symptoms.
The current laboratory specification states that this assay is not performed on formed stool specimens.
Testing formed stool or asymptomatic people can create misleading positive findings because colonisation may be detected even when C. difficile is not causing illness.
A positive PCR result therefore needs to be interpreted alongside stool frequency, stool consistency, antibiotic history, healthcare exposure and the overall clinical picture.
Severe C. difficile can cause significant dehydration, abdominal inflammation and systemic illness and requires prompt medical management.
What Does the Clostridium Difficile Toxin by PCR Test Check?
This test measures 1 biomarker.
Clostridium Difficile Toxin by PCR
Detects molecular evidence of toxigenic C. difficile in an appropriate unformed stool specimen to support investigation of suspected C. difficile-associated diarrhoea.
Who May Benefit From the Clostridium Difficile Toxin by PCR Test?
PCR testing is most appropriate in people with new, clinically significant diarrhoea and relevant risk factors or clinical suspicion.
People who develop significant diarrhoea during or after antibiotic treatment - Antibiotic exposure is one of the most important risk factors for C. difficile infection.
People with frequent new watery stools after recent hospitalisation - Healthcare exposure and antibiotic use can increase risk.
People with previous C. difficile infection and recurrent compatible diarrhoea - Recurrence can occur after apparently successful treatment.
Older adults with new unexplained diarrhoea - Age can increase susceptibility, particularly when other risk factors are present.
People with significant healthcare exposure - Hospitals and care facilities are recognised environments where C. difficile transmission can occur.
People who are immunocompromised and develop persistent diarrhoea - A wider infectious assessment may be needed, with C. difficile considered where clinically appropriate.
People with diarrhoea after a prolonged antibiotic course - Disruption of normal bowel flora can allow toxigenic C. difficile to proliferate.
People with unexplained inflammatory colitis where infection is being investigated - Molecular testing may contribute to distinguishing infectious from non-infectious causes.
People with a previous positive C. difficile history and new symptoms - Clinical reassessment can determine whether recurrence testing is appropriate.
People specifically advised to obtain C. difficile PCR testing - Testing is most useful when the specimen and symptoms meet appropriate laboratory criteria.
How to Prepare
Do not submit a formed stool specimen for this assay.
PCR can detect toxigenic organisms in colonised people, so the test is most useful when performed because clinically significant unexplained diarrhoea is actually present.
Symptoms and Reasons to Consider the Clostridium Difficile Toxin by PCR Test
C. difficile infection most commonly causes new watery diarrhoea, particularly after antibiotic or healthcare exposure.
Frequent watery diarrhoea - Multiple new loose or watery bowel movements are the principal symptom prompting C. difficile investigation.
Diarrhoea beginning during antibiotic treatment - Antibiotics can disrupt normal gut bacteria and allow C. difficile overgrowth.
Diarrhoea developing in the weeks after antibiotics - Infection can become apparent after the antibiotic course has finished.
Abdominal cramping or tenderness - Colonic inflammation can cause abdominal discomfort.
Fever with significant diarrhoea - Systemic inflammatory features can occur in more significant infection.
Nausea or reduced appetite - Gastrointestinal illness can cause broader digestive symptoms.
Signs of dehydration - Frequent diarrhoea can result in thirst, dizziness, weakness and reduced urine output.
Recurrent diarrhoea after previous C. difficile treatment - Relapse or reinfection can occur.
New diarrhoea after recent hospital or care-home exposure - Healthcare environments can increase exposure risk.
Worsening abdominal distension or severe abdominal pain - These can indicate complicated colitis and require urgent clinical assessment.
C. difficile PCR should generally be performed on unformed stool from a symptomatic person, not as a routine test in someone who feels well.
Severe abdominal pain, marked abdominal swelling, high fever, confusion, very low urine output, blood-pressure collapse or severe dehydration can indicate complicated infection and requires urgent medical assessment.
How to Book Your Clostridium Difficile Toxin by PCR Test
This test requires an appropriate unformed stool specimen.
Choose the Clostridium Difficile Toxin by PCR
Select the C. difficile molecular stool test and review the specimen requirements.
Select your sample collection option
Obtain the approved stool container and collection instructions.
Attend your appointment
Collect and return the unformed stool specimen according to the supplied transport instructions.
Laboratory analysis
PCR analysis is performed for molecular evidence of toxigenic C. difficile.
Receive your results securely
Your authorised microbiology result is delivered securely and should be reviewed clinically if C. difficile is detected.
When Will I Receive My Results?
The current specialist laboratory turnaround for Clostridium Difficile Toxin by PCR is approximately 2 business days after an acceptable unformed stool specimen reaches the laboratory.
The laboratory first confirms that the specimen is suitable for analysis. Formed stool is not accepted for this assay, so inappropriate specimen consistency can prevent testing and require a new sample.
Once accepted, PCR analysis, laboratory quality checks and authorisation are completed before the result is released. Transport time, weekends, repeat molecular analysis or specimen problems can occasionally extend the overall reporting period.
Understanding Your Results
A negative PCR result means that the toxigenic C. difficile genetic target included in the assay was not detected in the submitted stool specimen.
This makes C. difficile-associated diarrhoea less likely, although ongoing significant diarrhoea may still require investigation for other infectious, inflammatory or medication-related causes.
A positive PCR result means genetic material associated with toxigenic C. difficile has been identified.
This finding is clinically meaningful when the person has compatible diarrhoea.
However, PCR is highly sensitive and can also identify colonisation, where toxigenic C. difficile is present but is not actually causing disease.
This is why stool consistency and symptoms are essential to interpretation.
A positive molecular result should be considered alongside stool frequency, antibiotic exposure, healthcare history and clinical severity.
Treatment decisions should be made by an appropriate clinician.
Repeat PCR immediately after successful treatment is generally not useful as a simple "test of cure", because bacterial genetic material or colonisation can remain detectable even after symptoms have improved.
Persistent or recurrent diarrhoea requires clinical reassessment rather than automatic interpretation of PCR positivity as treatment failure.
Why Book With London Blood Tests?
Private C. difficile testing - Access specialist molecular stool testing privately.
Molecular detection of toxigenic C. difficile - PCR identifies genetic evidence associated with toxin-producing strains.
Relevant after antibiotic-associated diarrhoea - Antibiotic exposure is a major clinical risk factor.
Appropriate specimen guidance - The test is performed on suitable unformed stool rather than formed specimens.
Specialist microbiology analysis - Your sample undergoes dedicated molecular infection testing.
Fast specialist turnaround - Results are expected approximately 2 business days after laboratory receipt.
Secure reporting - Receive your authorised microbiology result securely.
Clear pricing - The Clostridium Difficile Toxin by PCR test costs £239.99.
Private Clostridium Difficile Toxin by PCR Test in London
London Blood Tests provides private Clostridium Difficile Toxin by PCR testing for people requiring investigation of suspected C. difficile-associated diarrhoea.
The test costs £239.99 and measures one biomarker: Clostridium Difficile Toxin by PCR.
An unformed stool specimen is required, and the assay is not performed on formed stool.
Results are expected approximately 2 business days after an acceptable specimen reaches the laboratory.
A positive PCR result should always be interpreted with symptoms because detection of toxigenic C. difficile can sometimes represent colonisation rather than active toxin-mediated disease.