Tryptophan Quantitative Plasma Test
Comprehensive Metabolic Health Assessment
The Tryptophan Quantitative Plasma Test represents a cutting-edge diagnostic approach to evaluating essential amino acid metabolism and detecting inborn errors of metabolism. Tryptophan serves as a critical precursor for serotonin, melatonin, and niacin synthesis, making its accurate measurement vital for understanding neurological function, sleep regulation, and overall metabolic health.
What Does This Test Measure?
This specialized laboratory analysis precisely quantifies tryptophan concentrations in blood plasma using sophisticated chromatography and mass spectrometry techniques. The test detects:
- Abnormal tryptophan levels indicating metabolic disorders
- Deficiencies affecting neurotransmitter production
- Excess concentrations suggesting metabolic pathway disruptions
- Patterns consistent with Hartnup disease and other aminoacidopathies
Who Should Consider This Test?
This diagnostic assessment is particularly valuable for individuals experiencing:
- Unexplained neurological symptoms or developmental delays in children
- Suspected inborn errors of metabolism
- Family history of metabolic disorders
- Unexplained skin rashes or photosensitivity
- Cognitive changes or mood disorders
- Sleep pattern disturbances
- Nutritional absorption concerns
Clinical Benefits and Applications
The Tryptophan Quantitative Plasma Test offers numerous clinical advantages:
- Early detection of metabolic disorders before severe symptoms develop
- Guided treatment planning for nutritional interventions
- Monitoring therapeutic effectiveness for metabolic conditions
- Comprehensive metabolic profile for personalized healthcare
- Foundation for genetic counseling and family planning decisions
Understanding Your Test Results
Your test results will provide quantitative tryptophan levels with reference ranges for proper interpretation:
- Normal Range: Indicates typical tryptophan metabolism and adequate nutritional status
- Elevated Levels: May suggest metabolic pathway blockages or specific enzyme deficiencies
- Reduced Levels: Could indicate malabsorption, inadequate dietary intake, or increased metabolic demands
- Pattern Analysis: Your healthcare provider will interpret results in clinical context, considering symptoms and other laboratory findings
Test Pricing and Availability
| Price Type | Amount (USD) |
|---|---|
| Discount Price | $450 |
| Regular Price | $626 |
Nationwide Testing Accessibility
We maintain comprehensive testing facilities across the United States, with convenient locations in all major metropolitan areas including New York, Los Angeles, Chicago, Houston, Phoenix, Philadelphia, San Antonio, San Diego, Dallas, San Jose, and numerous other cities. Our network ensures accessible metabolic testing services for patients nationwide.
Sample Collection Requirements
Proper sample collection is essential for accurate results:
- Sample Type: 2 mL (1 mL minimum) plasma from Green Top Sodium Heparin tube
- Preparation: Separate plasma and freeze within 2 hours of collection
- Shipping: Ship frozen samples – DO NOT THAW
- Fasting: Overnight fasting or at least 4 hours fast after meal required (non-fasting pediatric samples acceptable)
- Documentation: Completed Test Send Out Consent Form (Form 35) mandatory
Turnaround Time and Reporting
Our laboratory maintains efficient processing protocols:
- Samples accepted until the 7th of each month
- Comprehensive reports delivered within 2-3 weeks
- Detailed analysis with clinical interpretation guidance
- Secure electronic and physical report delivery options
Schedule Your Metabolic Assessment Today
Take the first step toward comprehensive metabolic health evaluation. Our specialized Tryptophan Quantitative Plasma Test provides critical insights into your metabolic function and helps identify potential disorders requiring intervention. With convenient locations across the USA and expert clinical support, we make advanced metabolic testing accessible and straightforward.
Call us today at +1(267) 388-9828 to schedule your appointment or discuss testing options with our metabolic specialists.

