Cultured AFB Antitubercular DST Ethambutol Test
Short Name: AFB DST Ethambutol
Also known as: AFB Culture and Sensitivity for Ethambutol, TB Drug Susceptibility Test Ethambutol, Mycobacterium tuberculosis DST Ethambutol
Cultured AFB Antitubercular DST Ethambutol Test test available at DNA Labs India for ₹4,000. Uses Automated Fluorescent Detection on Pure growth of Mycobacterium tuberculosis complex on appropriate media samples. Results in Reports are available within 21 days from sample submission.. 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 diagnose tuberculosis infection and determine the susceptibility of Mycobacterium tuberculosis to Ethambutol for targeted treatment.
- Test Code
- 432
- Price
- ₹4,000
- Sample Type
- Pure growth of Mycobacterium tuberculosis complex on appropriate media
- Result Time
- Reports are available within 21 days from sample submission.
- Fasting Required
- No
- Method
- Automated Fluorescent Detection
Sample Collection
No special preparation required. Ensure the sample is collected properly if sputum submission is needed for initial culture.
Method: Laboratory culture from submitted specimens or sputum collection for initial AFB culture
Laboratory Analysis
For pure growth submission, deliver the culture in a sterile container. For sputum collection, follow lab instructions for sample handling.
Report Delivery
Store the sample as per stability guidelines and transport refrigerated if required.
Timeline: Reports are available within 21 days from sample submission.
Patient Instructions
About This Test
Who Should Get This Test
To diagnose tuberculosis infection and determine the susceptibility of Mycobacterium tuberculosis to Ethambutol for targeted treatment.
How to Prepare
- Submit pure growth of Mycobacterium tuberculosis complex on appropriate media.
- Use a sterile screw capped container and place in a sealed plastic bag.
- Ship refrigerated to maintain sample integrity.
- If processing from existing specimens, ensure proper handling in the lab.
Doctor's Notes
Reviewed by Dr Kothari Ramesh Shantilal — MBBS, MD (Microbiology) · Reg. No. 27670
"Early diagnosis with drug susceptibility testing ensures effective tuberculosis treatment and prevents disease spread."
Last medically reviewed: September 7, 2026
Test Parameters & Specifications
Sample Stability
- Contaminated or improperly stored samples
- Insufficient bacterial growth for testing
- Leaking or damaged containers
Understanding Your Results
Susceptible
The bacteria can be effectively treated with Ethambutol as part of the TB regimen.
Resistant
The bacteria are not responsive to Ethambutol; alternative medications may be required.
Consult a doctor if you experience symptoms of tuberculosis, have been exposed to TB, or if test results indicate resistance, for adjusted treatment planning.
Limitations
- ⚠Only tests susceptibility to Ethambutol, not other anti-TB drugs
- ⚠Requires culture growth, which can take several weeks
- ⚠Not suitable for direct patient samples; requires prior AFB culture
Risks & Considerations
- ●Minimal risks as it is a culture-based test; no direct invasive procedures for the patient
Interfering Factors
- ●Contamination during sample collection or processing
- ●Improper sample storage or stability
- ●Prior antibiotic use affecting bacterial growth
Compare With Similar Tests
| Test | Cultured AFB Antitubercular DST Ethambutol Test | Chest X-ray | Sputum Smear Microscopy | Tuberculin Skin Test (TST) | Blood Tests (e.g., IGRA) |
|---|---|---|---|---|---|
| Comparison | Cultured AFB Antitubercular DST Ethambutol Test |
Frequently Asked Questions
What is the Cultured AFB Antitubercular DST Ethambutol Test?
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