Test Price
650 AED✅ Home Collection Available
Cultured AFB Antitubercular DST Ethambutol Test
Executive Summary & Core Metrics
- ✓ Accuracy Guarantee: 99.9% Diagnostic Sensitivity via ISO-Accredited Automated Fluorometric Processing (BACTEC MGIT 960 Reference Platform).
- ✓ Premium Logistics: Hospital Extraction Only – Sample collection is conducted strictly within an accredited hospital facility; mobile home phlebotomy is disabled for safety.
- ✓ Clinical Guidance: Complimentary Telephonic Post-Test Clinical Consultation for result interpretation with DHA-licensed specialists.
- ✓ Insurance & Billing: Direct Billing Verification via WhatsApp — +971 54 548 8731
Test Overview & Methodology
The Cultured AFB Antitubercular DST Ethambutol Test is a definitive drug susceptibility assay that determines whether a patient's Mycobacterium tuberculosis isolate is phenotypically resistant or sensitive to ethambutol — a critical first-line agent in the DOTS regimen. This assay is the gold-standard reference for guiding individualized therapy in drug-resistant tuberculosis cases according to UAE National TB Program protocols.
| Feature | Our Test (Gold Standard) | Conventional Alternative |
|---|---|---|
| Methodology | Automated Fluorometric Liquid Culture (BACTEC MGIT 960) | Phenotypic Proportion Method on Löwenstein-Jensen Solid Medium |
| Precision | 99.9% Diagnostic Sensitivity — Calibrated to WHO Critical Concentrations 2026 | ~92–95% Sensitivity — Visual Colony Counting Variability |
| Turnaround Time | 21 Days from Receipt of Pure Isolate | 28–42 Days |
| Price | 650 AED | 500–700 AED (Variable) |
| Regulatory Alignment | Full DHA/MOHAP Compliance | Variable — May lack ISO chain-of-custody documentation |
Physician Insight & Safety Protocols
Dr. Ajay Singh (DHA Registration ID: 36234132, General Practitioner) notes:
“Ethambutol susceptibility testing must always be interpreted alongside the patient's clinical history, imaging, and molecular markers. A susceptible result is reassuring but does not replace the need for directly observed therapy. Premature discontinuation of ethambutol — even after culture conversion — can select for drug-resistant mutants and compromise long-term cure. Your laboratory data empowers clinical decisions, but your doctor's guidance remains indispensable.”
Medication Safety Advisory
Do not discontinue or modify any prescribed antitubercular medication — including ethambutol, isoniazid, rifampicin, or pyrazinamide — without explicit consultation with your treating physician. Abrupt cessation of anti-TB therapy can precipitate drug resistance, treatment failure, and severe clinical deterioration including disseminated tuberculosis.
Exclusion Criteria & Emergency Red Flags
Exclusion Criteria
- Non-viable or contaminated mycobacterial cultures (no growth detected beyond day 42).
- Mixed mycobacterial growth suggesting non-tuberculous mycobacteria (NTM) overgrowth.
- Specimens failing cold-chain integrity upon receipt (temperature excursion >8°C for >2 hours).
- Pediatric samples (<18 years) submitted without notarized guardian consent per UAE Federal Decree-Law No. 4 of 2016 on Medical Liability.
Seek Emergency Medical Attention If You Experience:
- Hemoptysis: Coughing up bright red blood or clots exceeding 5 mL.
- Severe Pleuritic Chest Pain: Sharp, stabbing pain worsened by breathing or coughing.
- Acute Dyspnea: Sudden shortness of breath at rest or with minimal exertion.
- High Fever >39°C unresponsive to antipyretics lasting >48 hours.
- Altered Mental Status: Confusion, disorientation, or loss of consciousness — possible tuberculous meningitis.
- Signs of Disseminated TB: New lymphadenopathy, spinal pain, or sterile pyuria.
Patient FAQ & Clinical Guidance
1. What is the Cultured AFB Antitubercular DST Ethambutol Test, and why is it essential for my TB treatment?
Snippet: This test determines whether Mycobacterium tuberculosis bacteria are resistant or susceptible to the first-line antitubercular antibiotic ethambutol using automated fluorometric culture methods calibrated to WHO critical concentrations.
Drug susceptibility testing for ethambutol is performed on a pure growth of M. tuberculosis complex cultured from a patient's respiratory or extrapulmonary specimen. The isolate is exposed to a standardized concentration of ethambutol in a liquid growth medium within the BACTEC MGIT 960 system. If the mycobacteria continue to grow despite the drug, the isolate is classified as resistant — a finding that directly informs your physician's choice of second-line agents and protects you from ineffective monotherapy. Per UAE National TB Program guidelines, every newly diagnosed case should have baseline DST to ethambutol and other first-line agents before treatment initiation.
2. How long does it take to receive results for the ethambutol susceptibility test?
Snippet: Results are issued within 21 days from receipt of the pure isolate in our ISO-accredited laboratory using automated liquid culture technology.
The drug susceptibility testing process for ethambutol requires a precise incubation period of 21 days minimum. The M. tuberculosis bacteria are grown in liquid media supplemented with standard drug concentrations. Growth is monitored automatically every 60 minutes via fluorometric fluorescence technology. This duration cannot be shortened without compromising diagnostic accuracy. Once complete, a detailed report is sent to your treating physician, with a complimentary telephonic consultation available to discuss results in English or Arabic.
3. Do I need to stop my TB medication before undergoing this ethambutol susceptibility test?
Snippet: Never discontinue prescribed antitubercular therapy without explicit consultation with your treating physician prior to this susceptibility test under any circumstances.
The Cultured AFB Antitubercular DST Ethambutol Test is performed on a pure mycobacterial isolate that has already been grown from your original specimen. Once the isolate is obtained, the susceptibility testing phase is independent of whether you are currently taking medications. Stopping ethambutol or any component of your multi-drug regimen can lead to a dangerous rebound in bacterial load, acquired drug resistance, and clinical relapse. If your doctor orders this during therapy, it is typically for resistance surveillance — not because the drug has failed. Continue all medications exactly as prescribed and bring your medication list to every collection appointment.
UAE Regulatory & Data Privacy Adherence
Data Privacy & Health Information Protection: All patient data is processed in full compliance with Federal Decree-Law No. 45 of 2021 on Personal Data Protection (PDPL) and Federal Law No. 2 of 2019 Concerning the Use of Information and Communication Technology in Health Fields. Clinical testing safety and patient consent procedures adhere to Federal Decree-Law No. 4 of 2016 on Medical Liability. Specimen collection from individuals under 18 years requires documented informed consent by a legal guardian in accordance with UAE medical liability regulations. All microbiological and genomic data is encrypted, stored within UAE sovereign cloud infrastructure, and never shared with third parties without explicit written authorization.
Clinical & Logistical Metadata
| Test Name | Cultured AFB Antitubercular DST Ethambutol Test |
| Price (AED) | 650 AED |
| Turnaround Time | 21 Days from Receipt of Pure Isolate |
| Sample Type / Matrix | Mycobacterial Culture Isolate (from respiratory or extrapulmonary specimen) |
| Methodology Used | BACTEC MGIT 960 Automated Fluorometric Liquid Culture |
| ICD-10-CM Code | Z16.24, A15.0, Z15.89 |
| LOINC Code | 29579-0 |
| DHA Facility License & Laboratory Address | License #1143 — Premises 105, Floor 1, Building 33, Dubai Healthcare City, Dubai, UAE | Corporate Lab: DNA Labs UAE |
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