Skip to content

Adv4041fibprotstlqlnaaprobe

Published: August 9, 2026Updated: August 10, 2026

This test detects adenovirus types 40 and 41 in stool samples using molecular methods to diagnose viral gastroenteritis.

Quick summary

{"Detects adenovirus types 40 and 41, common causes of stomach flu in children","Uses a molecular test (NAA) to identify the virus's genetic material in stool","Helps doctors diagnose the cause of diarrhea, vomiting, and stomach symptoms","Results are typically available within a few days","No special fasting or preparation is needed before sample collection"}

Medically reviewed by WellAlly Editorial TeamLast reviewed August 10, 2026Editorial policy

Key facts at a glance

LOINC
80674-5
Short code
ADV 40/41 PCR stool
Synonyms
AdV 40+41 fib prot Stl Ql NAA+probe
Category
chemistry
Sample
stool
Container
Sterile, leak-proof stool container (dry container preferred)
Units
N/A
Ref low
0
Ref high
0
Fasting
false
Population
adult
Sex
all
Age range
0–120 years
Method
probe-amp-tar
CPT
87650
SNOMED
122442009
Specimen volume
1-2 mL liquid stool or 1-2 g formed stool
Stability
Room temperature: 24 hours; Refrigerated (2-8°C): 72 hours; Frozen (-20°C or below): 30 days. Avoid repeated freeze-thaw cycles.
TAT
24–72 hours
Order
routine

What is this test?

This test looks for adenovirus types 40 and 41 in your stool sample. These specific types of adenovirus are a common cause of viral gastroenteritis, often called "stomach flu," especially in young children. The test uses a method called Nucleic Acid Amplification (NAA) with probe detection to find the genetic material (fiber protein gene) of the virus. This is a very sensitive test that can detect even small amounts of the virus.

Why do I need this test?

Your doctor may order this test if you or your child has symptoms of gastroenteritis such as diarrhea, vomiting, stomach pain, nausea, or fever. Adenovirus types 40 and 41 are common culprits, particularly in children under 2 years old. This test helps confirm whether an adenovirus infection is causing your symptoms, which can guide proper treatment and help prevent the spread of infection to others.

How is the sample collected?

A stool sample is collected in a clean, dry container. For infants, the sample can be collected from a clean diaper. It is important to avoid mixing urine or water with the stool sample. The sample should be delivered to the laboratory as soon as possible, preferably within a few hours of collection. If you cannot deliver the sample immediately, it may be stored in a refrigerator for up to 24-48 hours.

What do the results mean?

A "positive" result means that adenovirus type 40 or 41 was detected in your stool, indicating you have an active adenovirus infection that is likely causing your symptoms. A "negative" result means no adenovirus 40/41 was detected, but this does not rule out other causes of your symptoms—you may have a different virus, bacteria, or other condition. Your doctor will interpret the results along with your symptoms and other test findings.

How long until I get my results?

Results are typically available within 1-3 days, depending on the laboratory. Your healthcare provider will contact you with the results or discuss them at your follow-up appointment.

Reference range

Not Detected - The absence of Adenovirus 40/41 fiber protein gene RNA/DNA indicates no active infection. Detected indicates presence of adenovirus 40 or 41 genetic material in the specimen.N/A

Specimen: stool

Collect fresh stool specimen in a clean, dry, wide-mouthed sterile container. Avoid contamination with urine, water, or toilet paper. No special diet or fasting required. Inform laboratory if patient has recently received contrast media or bowel preparations.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Frequently asked questions

Do I need to fast before this test?
No fasting is required for this test. You can eat and drink normally before providing your stool sample.
Is the test painful?
No, this test is not painful. It only requires providing a stool sample, which is a non-invasive collection method.
Can adults get adenovirus gastroenteritis?
Yes, adults can be infected, though it is more common in children. Adults may have milder symptoms or may be asymptomatic carriers who can still spread the infection.
How is adenovirus gastroenteritis treated?
There is no specific antiviral treatment for adenovirus gastroenteritis. Treatment is supportive and focuses on preventing dehydration by drinking plenty of fluids. In severe cases, intravenous fluids may be needed. Most people recover within 1-2 weeks.
How can I prevent spreading the infection?
Wash your hands thoroughly with soap and water after using the bathroom and before preparing food. Clean and disinfect surfaces that may be contaminated. Keep children with symptoms home from school or daycare until they have been symptom-free for at least 24 hours.
  1. 1
    CDC - AdenovirusesSource
  2. 2
    Mayo Clinic - Adenovirus InfectionSource
  3. 3
    LOINC Code 80674-5 ReferenceSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 10, 2026. · Read our editorial policy