Test Price
2,500 AED✅ Home Collection Available
Tryptophan Quantitative Plasma Test – LC-MS/MS | DNA Labs UAE
Executive Summary & Core Metrics
✅ 99.9% Diagnostic Sensitivity – Liquid Chromatography–Tandem Mass Spectrometry (LC-MS/MS) via ISO 9001:2015 Accredited Lab
🚗 Premium Logistics: VIP Mobile Phlebotomy & Temperature-Controlled Cold-Chain Home Collection (Available daily from 8 AM to 11 PM)
📞 Post-Test Clinical Guidance: Telephonic Consult for Result Interpretation by Dr. Ajay Singh, GP (DHA 36234132)
💳 Insurance Verification: Direct Billing via WhatsApp: +971 54 548 8731
Pre-test Requirements: Overnight fasting or ≥4 hours post-meal (non-fasting pediatric samples acceptable). Mandatory: Send Out Consent Form (Form 35). Plasma must be separated & frozen within 2 hours; ship frozen, DO NOT THAW. Sample must reach by 7th of the month; report within 2–3 weeks.
Test Overview & Methodology
The Tryptophan Quantitative Plasma Test measures the level of the essential amino acid tryptophan in blood plasma using liquid chromatography–tandem mass spectrometry (LC-MS/MS), the gold standard for accuracy. This test is primarily used to screen for inborn errors of metabolism such as Hartnup disease, tryptophanuria, and other aromatic amino acid disorders.
| Feature | Our Test (LC-MS/MS) | Routine HPLC Alternative |
|---|---|---|
| Methodology | Liquid Chromatography–Tandem Mass Spectrometry (LC-MS/MS) | High-Performance Liquid Chromatography (HPLC) |
| Diagnostic Accuracy | 99.9% Sensitivity, ultra-specific | ~90% sensitivity, risk of interferences |
| Turnaround Time | 2–3 weeks (batch processing) | 4–6 weeks typical |
| Accreditation | ISO 9001:2015, DHA/MOHAP compliant | Often not ISO accredited |
Physician Insight & Safety Protocols
“As a general practitioner, I emphasize that tryptophan results must be interpreted alongside clinical symptoms and genetic testing. A single lab value does not define a disorder. For children, ensure metabolic specialist oversight. This test, when combined with proper clinical evaluation, guides effective management.” – Dr. Ajay Singh, General Practitioner, DHA Registration ID: 36234132
Advisory & Medication Safety
⚠️ Medication Safety Warning
Do not discontinue any prescribed medication without consulting your doctor. Fasting and sample handling instructions must be followed precisely to avoid inaccurate results.
Exclusion Criteria & Emergency Red Flags
- Severe hemolytic anemia or active bleeding disorder – inform phlebotomist.
- If patient is experiencing acute metabolic crisis (e.g., lethargy, seizures, vomiting, altered consciousness), seek ER immediately; testing may be deferred.
- Neonates: if jaundice, hypoglycemia, or unexplained neurological symptoms, urgent metabolic workup required.
- Improper sample collection (delayed freezing, thawing) will require recollection.
Patient FAQ & Clinical Guidance
1. What is the purpose of the Tryptophan Quantitative Plasma Test?
This test quantifies plasma tryptophan to screen for inborn errors of metabolism such as Hartnup disease and tryptophanuria. It assists in diagnosing and managing amino acid disorders.
2. How should I prepare for the test?
Fast overnight or at least 4 hours before blood draw; pediatric patients may be exempted. Complete and sign the Send Out Consent Form (Form 35). Inform your phlebotomist of any medications or supplements containing tryptophan.
3. Can this test be performed on newborns?
Yes, non-fasting pediatric samples are acceptable. Neonatal screening for metabolic disorders is vital and can be arranged with specialist oversight.
4. How are results reported and interpreted?
Results are reported in µmol/L with reference ranges for age. A follow-up telephonic consult with our general practitioner is included to discuss clinical implications.
UAE Regulatory & Data Privacy Adherence
Data Protection & Health Information Governance: Your test data is handled 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 safety and patient consent follow Federal Decree-Law No. 4 of 2016 on Medical Liability.
Corporate Lab Branding: DNA Labs UAE | DHA Facility License Number: 1143
Accreditation: ISO 9001:2015 Cert: INT/EGQ/2509DA/3139
Clinical & Logistical Metadata
| Test Name | Tryptophan Quantitative Plasma Test (LC-MS/MS) |
| Price (AED) | 2,500 AED |
| Turnaround Time | 2–3 weeks (batch processing) |
| Sample Type / Matrix | Plasma (frozen, separated within 2 hours) |
| Methodology Used | Liquid Chromatography–Tandem Mass Spectrometry (LC-MS/MS) |
| ICD-10-CM Code | E72.0 (Disorders of amino-acid transport) / Z13.228 (Encounter for screening for metabolic disorder) |
| LOINC Code | 14556-2 (Tryptophan [Mass/volume] in Serum or Plasma) |
| DHA Facility License & Address | License #1143 | Premises 105, Floor 1, Building 33, Dubai Healthcare City, Dubai, UAE |
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