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Arginine and Proline Metabolite Profile (Serum/Plasma)

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

This test measures levels of arginine and related proline metabolites in your blood, which can help assess metabolic health, kidney function, or potential imbalances in amino acid metabolism.

Quick summary

["This test helps evaluate how well your body processes certain amino acids and supports understanding of underlying metabolic conditions."]

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

Key facts at a glance

LOINC
79199-6
Short code
GH 15M p Arg+Ins SerPl-mCnc
Synonyms
GH 15M p Arg+Ins SerPl-mCnc
Category
hormone
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
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 metabolic issues. It could also be used to monitor conditions like kidney disease, liver disorders, or genetic metabolic disorders that affect amino acid metabolism.

What to Expect Before the Test

No special preparation is typically needed, but you may be asked to fast for a few hours before the blood draw if arginine levels are being specifically measured. Always follow your provider’s instructions.

What the Test Involves

A small needle will be used to draw blood from a vein in your arm. You may feel a slight pinch, but the process usually takes just a few minutes. You can usually return to normal activities immediately afterward.

Possible Results and Interpretation

Results are interpreted by your healthcare provider based on your overall health, symptoms, and medical history. Abnormal levels may indicate conditions like urea cycle disorders, kidney disease, or other metabolic abnormalities.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

Serum/Plasma Amino Acid/Metabolite Analysis

Frequently asked questions

What Does This Test Measure?
This test measures the concentration of arginine and related proline metabolites in your blood plasma or serum. It helps identify imbalances that may signal metabolic disorders or kidney function issues.
What Are Common Causes of Abnormal Results?
Abnormal results may be linked to kidney disease, liver problems, genetic metabolic disorders, or conditions affecting amino acid metabolism. Your provider will discuss findings in the context of your health history.
How Often Should This Test Be Repeated?
Your provider will determine how often to repeat this test based on your condition and treatment plan. Follow-up may be needed if metabolic concerns or symptoms persist.
  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