Mycobacterium tuberculosis Qualitative PCR Test (650 AED) – DHA Licensed Molecular Diagnostics

Executive Summary & Core Metrics

Clinical Utility: Validated real-time PCR assay targeting the multicopy insertion sequence IS6110 for the qualitative detection of Mycobacterium tuberculosis complex DNA from respiratory specimens.

Diagnostic Performance: Sensitivity exceeding 99% for culture-confirmed pulmonary tuberculosis, enabling rapid rule-in or rule-out for smear-negative suspects.

Turnaround Time: Definitive molecular result within 3–4 business days from sample receipt.

Regulatory Compliance: Full adherence to DHA licensing standards (License No. 1143), ISO 9001:2015 certification, and UAE Federal Personal Data Protection Law (PDPL).

Clinical Supervision: Post-test telephonic consultation and test interpretation provided by Dr. Ajay Singh (GP, DHA Registration ID: 36234132).

Test Overview & Diagnostic Methodology

The Mycobacterium tuberculosis Qualitative PCR test uses a highly sensitive real-time PCR (qPCR) platform to detect and amplify DNA sequences unique to the M. tuberculosis complex. This molecular assay is designed for rapid and accurate identification of tuberculous infection directly from clinical specimens, delivering results in days instead of the weeks required for conventional culture methods. It is particularly valuable in paucibacillary disease where smear microscopy sensitivity is limited.

Feature	Our TB Qualitative PCR	Conventional AFB Smear / Culture
Methodology	Real-Time PCR (qPCR) targeting IS6110	Microscopy & Culture (4–8 weeks)
Turnaround Time	3–4 days	Up to 42 days
Sensitivity	> 99% (DNA detection)	~60–70% (smear), cultures higher
Clinical Utility	Rapid rule-in/rule-out, drug resistance gene screening	Phenotypic drug susceptibility testing

Physician Insight & Safety Protocols

"A positive qualitative PCR result for M. tuberculosis complex DNA confirms the presence of tubercle bacilli but must be interpreted in the full clinical context, including chest imaging, symptom duration, and exposure history. This assay cannot differentiate viable from non-viable organisms, making it unsuitable for treatment monitoring. It is a powerful diagnostic adjunct, not a standalone decision-making tool for therapy initiation."

— Dr. Ajay Singh | General Practitioner | DHA Registration ID: 36234132

Clinical Advisory & Medication Stability

Medication Advisory:

Do not interrupt, modify, or discontinue any prescribed antitubercular therapy without explicit consultation with your managing physician. The qualitative TB PCR result should be reviewed strictly alongside drug susceptibility patterns, clinical response assessments, and radiographic evolution of the disease.

Exclusion Criteria & Emergency Red Flags

Active hemoptysis: Immediate emergency department transfer is required; sample collection is deferred until bleeding is controlled and the patient is clinically stable.
Severe respiratory distress: SpO₂ less than 90% or evidence of mediastinal shift from a large pleural effusion warrants immediate emergency services consultation.
Confirmed or suspected XDR-TB: Strict airborne infection isolation is mandatory; sample collection is limited exclusively to hospital respiratory isolation units.
Known anaphylactic reaction: Patients with a documented allergy to lidocaine or bronchoscopy-related medications if bronchoscopic sampling is planned.

Patient FAQ & Clinical Guidance

1. How is the TB PCR test different from a standard sputum smear test?

A sputum smear examines stained sputum under a microscope for acid-fast bacilli (AFB) and provides results within hours, but it has limited sensitivity (60–70%). The TB PCR test detects the genetic fingerprint of M. tuberculosis directly from the sample, with a sensitivity exceeding 99%, making it highly effective for smear-negative TB suspects and delivering results in 3–4 days.

2. What are the mandatory safety procedures for sample collection?

Because respiratory specimen collection for TB PCR is an aerosol-generating procedure, all samples must be collected in a negative-pressure room or a well-ventilated, airborne-infection isolation area by healthcare personnel wearing N95 respirators. Home collection is strictly unavailable for this test to ensure maximum safety for the patient and the public.

3. Can I eat or drink before giving a sputum sample for this test?

Ideally, collect a deep cough sputum sample in the morning before eating or drinking. Rinse your mouth with plain water before collection. Avoid using mouthwash or toothpaste before sampling, as these can contain substances that may inhibit the PCR reaction.

4. What does a negative TB PCR result mean for diagnosis and treatment?

A negative PCR result significantly reduces the likelihood of active pulmonary tuberculosis, especially in symptomatic patients. However, it does not completely rule out the disease, particularly in cases with low bacterial load (paucibacillary disease) or extrapulmonary infection. Clinical and radiographic correlation remains essential, and your physician may still recommend culture-based testing or bronchoscopy if clinical suspicion is high.

UAE Regulatory & Data Privacy Adherence

This diagnostic service complies fully with the UAE health data protection frameworks: 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. All genomic and infectious disease data are encrypted, access-controlled, and processed exclusively within UAE-based secure servers. The laboratory operates under a certified Quality Management System (ISO 9001:2015) and is licensed by the Dubai Health Authority (Facility License No. 1143).

Clinical & Logistical Metadata

Test Name	Mycobacterium tuberculosis Qualitative PCR
Price (AED)	650 AED
Turnaround Time	3–4 business days
Sample Type / Matrix	Hospital Extraction Only – Sample collection is conducted strictly within an accredited hospital facility; mobile home phlebotomy is disabled for safety.
Methodology Used	Real-Time PCR (qPCR) with multicopy insertion sequence IS6110 targeting
ICD-10-CM Code	A15.0 (Tuberculosis of lung)
LOINC Code	5004-6 (M. tuberculosis complex DNA [Presence] in Sputum)
DHA Facility License & Lab Address	DHA License No. 1143 \| Premises 105, Floor 1, Building 33, Dubai Healthcare City, Dubai, UAE