Bacteriaduodflaerobecult
This test analyzes fluid from the duodenum (the first part of the small intestine) to identify and grow aerobic bacteria.
{"The test detects aerobic bacteria in fluid from your small intestine","Sample is collected during an endoscopic procedure","Helps diagnose bacterial overgrowth in the intestines","Results guide antibiotic treatment decisions","Preparation typically involves fasting before the procedure"}
Key facts at a glance
- LOINC
- 53617-7
- Short code
- DUOBAER
- Synonyms
- Bacteria Duod fl Aerobe Cult
- Category
- chemistry
- Sample
- serum
- Container
- Sterile, leak-proof container without preservatives; anaerobic transport vial may be used for concurrent anaerobic culture. Specimen should be transported in appropriate transport medium.
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- ≥ 0 years
- Method
- aerobic-culture
- CPT
- 87075
- SNOMED
- 44060000
- Specimen volume
- 1-5 mL of duodenal fluid (minimum 0.5 mL); larger volumes preferred for optimal organism recovery
- Stability
- Room temperature: deliver to laboratory within 2 hours of collection. Refrigerated (2-8°C): stable up to 24 hours. If delay is anticipated, inoculate onto appropriate media at bedside or use transport medium.
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 48–168 hours
- Order
- routine
What is this test?
The Bacteria Identified in Duodenal Fluid by Aerobe Culture test is a laboratory examination that collects a sample of fluid from the duodenum (the first section of your small intestine) and cultures it to identify aerobic bacteria. Aerobic bacteria are microorganisms that require oxygen to grow. This test helps doctors determine if there is an abnormal amount or type of bacteria growing in your small intestine, a condition known as Small Intestinal Bacterial Overgrowth (SIBO).
Reference range
No aerobic bacteria isolated. Normal duodenal fluid is typically sterile or contains low numbers of oropharyngeal flora. Any growth is reported with identification and antimicrobial susceptibility when clinically indicated.N/A
Patient should be fasting for at least 8 hours prior to duodenal fluid collection. Discontinue antibiotics ideally 48-72 hours before specimen collection when clinically feasible, unless directed otherwise by physician. Proton pump inhibitors and H2 blockers may affect results and should be noted.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Frequently asked questions
How is the duodenal fluid sample collected?
Do I need to prepare for this test?
Is the procedure painful?
How long does it take to get results?
What do the results mean?
Sources
- 1
- 2
- 3
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.
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.
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Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy