Mycobacterial Genotyping by Sequencing (from Stool Sample)
This test identifies the specific type of bacteria causing a suspected mycobacterial infection in your stool sample, helping healthcare providers determine the best treatment approach.
["This test helps pinpoint the exact mycobacterial strain for targeted treatment planning."]
Key facts at a glance
- LOINC
- 89486-5
- Short code
- Mycobacterial Susc Pnl Islt Genotyp
- Synonyms
- Mycobacterial Susc Pnl Islt Genotyp
- Category
- coagulation
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- genotyping
- Specimen volume
- 5 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
Why This Test Is Done
Your doctor may order this test if you have symptoms like persistent diarrhea, weight loss, or fever that suggest a possible mycobacterial infection (such as tuberculosis or nontuberculous mycobacteria). It’s particularly useful when standard cultures take too long to grow results or when antibiotic resistance is suspected.
How the Test Works
A small sample of your stool is collected and analyzed using advanced genetic sequencing. This process identifies the unique genetic material of the bacteria, allowing for precise identification beyond what traditional culture methods can provide.
What to Expect Before the Test
No special preparation is needed. You may be asked to collect a fresh stool sample in a provided container, similar to a routine stool test for other infections.
What to Expect After the Test
Results typically take several days to a week, depending on lab processing. Your healthcare provider will discuss the findings and next steps, such as starting specific antibiotics or further monitoring.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
This test is critical for guiding antibiotic therapy. Knowing the exact mycobacterial strain helps prevent unnecessary antibiotic use, reduces resistance risks, and ensures the most effective treatment for your condition. It’s especially important for patients with chronic infections or those who may have been exposed to drug-resistant strains.
Short name
Stool Mycobacterial Genotyping
Frequently asked questions
How long does it take to get results from this test?
Is there any risk or discomfort associated with this test?
Can I eat or drink normally before this test?
Sources
- 1
- 2Lab Tests OnlineSource
- 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.
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 16, 2026. · Read our editorial policy