Gastrointestinal Infection

Gastroenteritis (stomach flu) is an inflammation of the lining of the intestines that can be caused by a variety of pathogens including viruses, bacteria, or parasites. Symptoms of gastroenteritis include diarrhea, abdominal pain, vomiting, headache, fever, and chills. Due to similar clinical signs and symptoms, diagnosis of the causative pathogens can be difficult. Viral gastroenteritis is most common and often caused by a norovirus that spreads through contaminated food or water, or by contact with an infected person. Most people recover with no treatment.

Bacterial gastroenteritis can result from infection after contact with animals or consuming food or water contaminated with bacteria. Numerous bacteria can cause gastroenteritis, including: Yersinia (found in pork), Staphylococcus (dairy products, meat, and eggs), Shigella (swimming pools), Salmonella (dairy products, meat, and eggs), Campylobacter (meat and poultry), and E. coli (ground beef and salads). Bacterial gastroenteritis outbreaks can happen when restaurants serve contaminated food. Bacterial gastroenteritis can be easily transmitted from person to person if someone carries the bacteria on their hands and touches food, objects, or other people. People with bacterial gastroenteritis have harmful bacteria in their stool. When they do not wash their hands well after using the bathroom, they can spread the germs to objects.

available-testAvailable Tests

Gastrointestinal Infection Panel.

testTest Information

Organism List:

Bacteria and bacterial toxins: Campylobacter, Clostridium difficile, Toxin A/B, Escherichia coli O157, Enterotoxigenic E. coli (ETEC) LT/ST, Shiga-like Toxin producing E. coli (STEC) stx1/stx2, Salmonella, Shigella, Vibrio cholera, Yersinia enterocolitica.Viruses: Adenovirus 40/41, Norovirus GI/GII, Rotavirus A.Parasites: Cryptosporidium, Entamoeba histolytica, Giardia.

Clinical Utility:

Retrogen offers early & accurate detection, rapid turnaround times, and only requires a single stool swab sample. Your referring physician will be provided with a detailed, comprehensive report that leads to actionable decisions and forward treatment options.


The Luminex xTAG® GPP is a next-generation, closed tube, multiplexed nucleic acid test intended for the simultaneous qualitative detection and identification of multiple viral, parasitic, and bacterial nucleic acids in human stool specimens, particularly from individuals with signs and symptoms of stomach flu or gastroenteritis.

order Ordering

Test ID:

Turnaround Time:

Preferred Specimen:


24-48 hours.

Stool specimen swab, rectal swab.

billing Billing

CPT Codes:

Billing Information:

Positive Vote


    CALL 1-800-RETROGEN OR (858) 455-8411