Cultured AFB Antitubercular DST Cycloserine Test
Short Name: AFB DST Cycloserine Test
Also known as: AFB Culture Sensitivity for Cycloserine, Mycobacterium tuberculosis DST Cycloserine
Cultured AFB Antitubercular DST Cycloserine Test test available at DNA Labs India for ₹4,000. Uses Automated Fluorescent on Pure growth of Mycobacterium tuberculosis complex on appropriate media samples. Results in 21 days. Free home collection in 300+ cities across India.
🩺 Medically Reviewed By
Dr Kothari Ramesh Shantilal
Consultant Microbiologist · Reg: 27670
Last reviewed: September 7, 2026
Overview
To determine the susceptibility of Mycobacterium tuberculosis to Cycloserine, aiding in the selection of effective tuberculosis treatment, particularly for drug-resistant strains.
- Test Code
- 433
- Price
- ₹4,000
- Sample Type
- Pure growth of Mycobacterium tuberculosis complex on appropriate media
- Result Time
- 21 days
- Fasting Required
- No
- Method
- Automated Fluorescent
Sample Collection
No special preparation is required from the patient, as the test uses a cultured specimen submitted by the laboratory or healthcare provider.
Method: Submission of cultured specimen
Laboratory Analysis
Not applicable, as the test is performed on a pre-cultured pure growth of bacteria.
Report Delivery
Ensure the sample is shipped refrigerated to the laboratory as per guidelines to maintain stability.
Timeline: 21 days
Patient Instructions
About This Test
Who Should Get This Test
To determine the susceptibility of Mycobacterium tuberculosis to Cycloserine, aiding in the selection of effective tuberculosis treatment, particularly for drug-resistant strains.
How to Prepare
- Submit a pure growth of Mycobacterium tuberculosis complex on appropriate culture media
- Use a sterile screw capped container placed in a sealed plastic bag for transport
- Ship the specimen refrigerated to preserve viability during transit
Doctor's Notes
Reviewed by Dr Kothari Ramesh Shantilal — MBBS, MD (Microbiology) · Reg. No. 27670
"This DST test is essential for guiding the use of Cycloserine in multidrug-resistant TB cases to ensure effective treatment."
Last medically reviewed: September 7, 2026
Test Parameters & Specifications
Sample Stability
- Contaminated or mixed bacterial cultures
- Improper container, labeling, or packaging
- Sample not shipped refrigerated as required
- Insufficient growth or viability of bacteria
Understanding Your Results
Susceptible
The bacteria are inhibited by Cycloserine, suggesting it may be effective for treating the TB infection when included in the regimen.
Resistant
The bacteria are not inhibited by Cycloserine, indicating that this drug will likely be ineffective, and alternative antibiotics should be considered.
Consult your healthcare provider to interpret the results in the context of your overall TB treatment plan, especially if resistance is detected or symptoms persist.
Limitations
- ⚠Tests only for Cycloserine susceptibility; other drugs require separate DST panels
- ⚠Depends on successful culture and growth of Mycobacterium tuberculosis, which may take time
- ⚠May not detect heteroresistance or all resistance mechanisms
- ⚠Turnaround time is 21 days, which may delay treatment decisions
Risks & Considerations
- ●No direct risks to the patient as the test is performed on a bacterial culture in the laboratory.
Interfering Factors
- ●Contamination of the culture sample
- ●Inadequate sample volume or improper storage
- ●Concurrent antibiotic use that may affect bacterial growth
- ●Technical errors in laboratory processing
Compare With Similar Tests
| Test | Cultured AFB Antitubercular DST Cycloserine Test | Sputum Smear Microscopy | PCR for Mycobacterium tuberculosis | Mantoux Tuberculin Skin Test |
|---|---|---|---|---|
| Comparison | Cultured AFB Antitubercular DST Cycloserine Test |
Frequently Asked Questions
What is the Cultured AFB Antitubercular DST Cycloserine Test?
Why is this test important for tuberculosis treatment?
How is the sample collected for this test?
What does a 'susceptible' result mean?
What does a 'resistant' result mean?
How long does it take to get the results?
Is home sample collection available for this test?
What is the cost of the test?
Can this test be done for children?
What other drugs are tested in TB drug susceptibility testing?
How accurate is this test?
What should I do if my test shows resistance?
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₹4,000Reference Laboratory Services
We serve as a reference laboratory for hospitals and clinics across India. Send samples from your facility with same-day pickup, priority processing, and results delivered through our online portal. Competitive institutional pricing available.
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✓ Stored in India: All patient records are stored on servers located in India. No data is transferred outside the country.
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