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Tyrosine and Valine Serum Levels (Mass Concentration)

Published: August 9, 2026Updated: August 16, 2026

This test measures the levels of two essential amino acids—tyrosine and valine—in your blood serum. These amino acids play key roles in protein synthesis, energy production, and maintaining healthy cells.

Quick summary

["Essential amino acids help your body build proteins and support metabolism; abnormal levels may signal underlying health concerns."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
101526-2
Short code
Tylvalosin Islt MIC
Synonyms
Tylvalosin Islt MIC
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
mic
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

Why This Test Might Be Ordered

Your healthcare provider may recommend this test if you have symptoms like fatigue, muscle weakness, or unexplained weight changes. It could also be part of a broader evaluation for metabolic disorders, genetic conditions, or nutritional deficiencies.

What to Expect During the Test

A blood sample will be drawn from a vein, usually in your arm. The sample is then processed to measure tyrosine and valine concentrations. Results are typically available within a few days, depending on lab processing times.

Common Reasons for Abnormal Results

Elevated levels of tyrosine or valine might be linked to conditions like liver disease, certain genetic disorders, or overproduction of amino acids. Low levels could indicate malnutrition, metabolic disorders, or kidney issues.

What You Can Do to Support Your Results

Maintain a balanced diet rich in proteins and essential amino acids. Stay hydrated and discuss any dietary changes with your healthcare provider before testing.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance: Interpretation and Next Steps

Short name

Tyrosine & Valine Profile

Frequently asked questions

How are tyrosine and valine levels typically interpreted?
Your provider will compare your results to reference ranges specific to your age, sex, and overall health. Abnormal values may prompt further testing, such as genetic screening or additional metabolic studies, to identify the underlying cause.
What if my results are outside the normal range?
If your levels are abnormal, your healthcare provider will work with you to determine the cause. This could involve lifestyle adjustments, dietary modifications, or referral to a specialist for further evaluation, such as a metabolic or genetic doctor.
Can diet or supplements affect these test results?
Yes, certain foods and supplements containing amino acids (like protein-rich foods or branched-chain amino acid supplements) may influence your results. It’s best to avoid these for at least 24 hours before your test if instructed by your provider.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy