Reverse T3 (rT3) Test in UAE | 2600 AED | Molecular Diagnostic via LC-MS/MS

Name: Reverse T3 (rT3) Test
Brand: DNA Labs UAE
SKU: DX-LAB-3215
Price: 2600 AED
Availability: InStock

Executive Summary & Core Metrics

Executive Summary

The Reverse T3 (rT3) test quantifies the biologically inactive isomer of triiodothyronine using Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS), offering diagnostic sensitivity exceeding 99.9% for evaluating peripheral thyroid hormone conversion. This advanced assay distinguishes euthyroid sick syndrome from true hypothyroidism when standard TSH and free T4 results are inconclusive. Premium home collection is available daily from 8:00 AM to 11:00 PM via VIP Mobile Phlebotomy with temperature-controlled cold-chain logistics, ensuring sample integrity and ISO 9001:2015 compliance. Post-test telephonic clinical guidance is provided by our clinical team. For direct insurance billing verification, contact us via WhatsApp at +971 54 548 8731.

Test Overview & Methodology

The Reverse T3 (rT3) assay is a specialized send-out test employing Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS) to measure reverse triiodothyronine with extreme precision (CV <5%). This method eliminates cross-reactivity from heterophile antibodies and structurally similar compounds, providing unambiguous results for clinical decision-making. The test aids endocrinologists and primary care physicians in evaluating patients with suspected non-thyroidal illness, optimizing thyroid replacement therapy, and ruling out true hypothyroidism.

Parameter	Our Test (Reverse T3, LC‑MS/MS)	Closest Alternative (Immunoassay)
Precision (CV%)	<5% (Mass Spectrometry)	10–15%
Methodology	Liquid Chromatography‑Tandem Mass Spectrometry (LC‑MS/MS)	Chemiluminescent Immunoassay (CLIA)
Turnaround Time	2–3 weeks (send‑out, gold‑standard accuracy)	3–5 working days (lower specificity)
Clinical Utility	Superior discrimination of sick euthyroid syndrome; free from heterophile antibody interference	Prone to interference in critical illness; may yield falsely elevated rT3

Physician Insight & Safety Protocols

“The Reverse T3 LC-MS/MS method provides a reliable window into peripheral thyroid hormone conversion. A suppressed rT3 in the presence of normal/low TSH and low normal free T4 is highly suggestive of euthyroid sick syndrome rather than primary hypothyroidism. This distinction prevents unnecessary levothyroxine initiation. Always correlate with the patient’s clinical presentation and acute illness status before altering therapy.”

— Dr. Ajay Singh, General Practitioner (DHA Registration ID: 36234132)

Medication & Safety Advisory

Do not discontinue or adjust thyroid medication without consulting your prescribing physician. The Reverse T3 test is a supplementary diagnostic tool and must not be used as the sole basis for treatment decisions. Always review results with your endocrinologist or primary care provider.

Exclusion Criteria & ER Red Flags

Patients currently in intensive care with multi-organ failure – rT3 interpretation is confounded; mandatory intensivist correlation required.
Inability to complete and sign the mandatory Send Out Consent Form (Form 35) – test cannot proceed.
Seek emergency care immediately if you experience: severe palpitations, chest pain, syncope, or hypothermia (temperature <35°C) – signs of thyroid storm or myxedema crisis.

Patient FAQ & Clinical Guidance

1. What does a high reverse T3 level indicate?

A high reverse T3 level typically indicates increased peripheral conversion of T4 to the inactive rT3 isomer, often seen in sick euthyroid syndrome. This pattern is not diagnostic of hypothyroidism; correlate with TSH and free T4 as well as the patient’s acute illness status for accurate interpretation.

2. Why is LC-MS/MS preferred over immunoassay for rT3 testing?

LC-MS/MS eliminates interference from heterophile antibodies and structurally similar molecules, which commonly plague immunoassays and cause falsely elevated rT3 results. This makes LC-MS/MS the gold standard for accurate quantization, especially in critically ill patients.

3. How should I prepare for the blood draw for the rT3 test?

No fasting or medication changes are required unless specifically instructed by your physician. You must complete and sign the mandatory Send Out Consent Form (Form 35) prior to sample collection. Our mobile phlebotomy team will handle logistics and transport under controlled conditions.

UAE Regulatory & Data Privacy Adherence

This service strictly adheres to the following UAE regulatory frameworks and international standards:

Federal Decree-Law No. 45 of 2021 on Personal Data Protection (PDPL) – ensuring end-to-end encryption of patient data during transmission and storage.
Federal Law No. 2 of 2019 Concerning the Use of Information and Communication Technology in Health Fields – governing electronic health records and telemedicine interactions.
Federal Decree-Law No. 4 of 2016 on Medical Liability – establishing patient consent and safety obligations for clinical testing.
ISO 9001:2015 Quality Management System (Certificate: INT/EGQ/2509DA/3139) – guaranteeing process reliability from collection to reporting.

Clinical & Logistical Metadata

Test Name	Reverse T3 (rT3) Test
Price (AED)	2,600 AED
Turnaround Time	2–3 weeks (send-out test)
Sample Type / Matrix	Serum or Plasma
Methodology Used	Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
ICD-10-CM Code	E07.81
LOINC Code	30532-3
DHA Facility License & Address	DHA License: 1143 Premises 105, Floor 1, Building 33, Dubai Healthcare City, Dubai, UAE Corporate Lab: DNA Labs UAE