Skip to content

Glutamine (Serum or Plasma Mass Concentration)

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

This test measures the amount of glutamine, a key amino acid found in your blood, which plays a role in protein synthesis and energy production.

Quick summary

["Glutamine helps support metabolism and immune function; levels may be checked for conditions affecting amino acid balance."]

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

Key facts at a glance

LOINC
13396-7
Short code
Glutamine Amn-mCnc
Synonyms
Glutamine Amn-mCnc
Category
chemistry
Sample
fluid
Container
Sterile tube
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Specimen volume
2-5 mL
Stability
Room temperature: 2h, Refrigerated: 24h
Hemolysis max
300
TAT
4–24 hours
Order
routine

Why Is This Test Done?

Your healthcare provider may order this test if you have symptoms like fatigue, muscle weakness, or unexplained weight changes. It may also be used to monitor conditions such as liver disease, kidney problems, or metabolic disorders that affect amino acid metabolism.

What to Expect Before the Test

No special preparation is usually needed, but you may be asked to fast for a few hours before the blood draw if your test involves fasting-related conditions. Bring any medications or supplements you’re taking to your appointment.

What Happens During the Test?

A healthcare professional will draw blood from a vein in your arm. You may feel a slight pinch, but it typically only takes a few minutes. The blood sample is then sent to a lab for analysis.

What Are Possible Results?

Results are reported as a mass concentration (measured in micromoles per liter, or µmol/L). Your actual range will depend on your health status, but abnormal levels may indicate underlying issues like metabolic disorders or organ dysfunction.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Glutamine levels can be low in patients with severe infections, malnutrition, or conditions like liver failure or kidney disease. High levels may suggest certain metabolic or genetic disorders. Your provider will interpret results in the context of your overall health and symptoms.

Short name

Glutamine Level

Frequently asked questions

How long does it take to get my results?
Results are typically available within 1 to 3 business days, depending on your lab’s processing time. Follow up with your healthcare provider to discuss the results and any next steps.
What does a low glutamine level mean?
A low glutamine level may signal conditions like malnutrition, infections, or organ dysfunction (such as liver or kidney disease). Your provider will review your symptoms and other test results to determine the cause and next steps.
Can diet affect glutamine levels?
Yes, diet can influence glutamine levels. High-protein diets or certain medical diets may impact amino acid metabolism. Always discuss dietary changes with your healthcare provider before making significant modifications.
  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