Gastrointestinal Screen – Bacteria and Parasites
£82.00
The Gastrointestinal Screen (SH28) is a comprehensive stool PCR test designed to detect the genetic material of bacterial pathogens and parasitic organisms, including Giardia and Cryptosporidium. This advanced gastrointestinal infection screen helps investigate symptoms such as diarrhoea, abdominal pain, digestive upset, and suspected intestinal infections by providing rapid and accurate pathogen detection. Available at Medical Diagnosis Victoria (MDX Victoria) in London, with results typically available within 6 days from a stool sample.
Gastrointestinal Screen
This test (SH28) uses PCR to detect the genetic material of bacterial pathogens and parasitic organisms, including Giardia and Cryptosporidium, in a stool sample. It is used to investigate gastrointestinal symptoms such as diarrhoea, abdominal pain, or suspected infections.
📊 Test Specifications
Why Choose This Test?
Symptom Investigation
This profile provides essential clarity if you are experiencing:
- Unexplained or persistent diarrhoea
- Severe abdominal pain and cramping
- Suspected food poisoning or infections
- Ongoing digestive discomfort after travel
Comprehensive Pathogen Detection
It uses advanced PCR technology to identify:
- Key bacterial pathogens such as Salmonella
- Escherichia coli O157 and Campylobacter
- Parasitic organisms such as Giardia lamblia
- Cryptosporidium and Shigella species
Actionable Insights
This detailed internal view supports:
- Rapid and specific identification
- Accurate medical diagnosis support
- Targeted antibiotic or treatment planning
- Clearer gut health investigation
Schedule Your Gastrointestinal Screen
Secure an appointment to collect your sample container and receive accurate diagnostic screening.

Providing Your Sample
You will be provided with a sterile container from our clinic to collect a small faeces sample. There are no special fasting or dietary requirements needed before collection. Once provided, your sample will be processed using PCR technology.
What Is Included?
This profile evaluates common bacterial and parasitic pathogens known to cause significant gastrointestinal distress.
Bacterial Pathogens
Evaluates aggressive bacterial strains commonly linked to food poisoning and gastroenteritis.
Parasitic Organisms
Detects microscopic parasites that can colonise the intestines, often contracted from contaminated water.
Advanced PCR Technology
Uses PCR methods to detect specific genetic material of organisms rather than waiting for lab cultures to grow.
Understanding the PCR Methodology
Traditional stool cultures can take several days to grow and may miss organisms that are difficult to cultivate. By using Polymerase Chain Reaction (PCR), this profile amplifies and detects the exact genetic signatures of pathogens, supporting faster and more targeted clinical management.
How To Read Your Laboratory Results
Your results will indicate whether genetic material from any included pathogens was detected in your sample. A positive result identifies the specific bacteria or parasite involved. Results should always be assessed alongside your symptoms, medical history, and clinical examination.
Results Timeline: Results are typically available within 6 days. Once ready, they will be securely shared with you.


Need Help? Private GP Consultations
If you have questions about your gastrointestinal results or if a pathogen has been detected, we offer Private GP consultations. A doctor can review your report, explain the findings, and discuss appropriate next steps.
Frequently Asked Questions
Most Searched Online Questions About Gastrointestinal Infections
Related Health Categories
Ready to Check Your Gut Health?
Take immediate control of your health pathway today. Arrange a precise, comprehensive Gastrointestinal Screen at our premium clinic spaces.







