Glutamine

ChemistryAlso known as: L-GlutamineAlso known as: GlnAlso known as: 2-Amino-4-carbamoylbutanoic acidnmol/mL

Measures the amount of glutamine excreted in a serum or plasma collection.

Normal Range
30 – 100 nmol/mL
nmol/mL
Abnormal Levels
Consult your provider
Specimen Type
Blood

Why This Biomarker Matters

Urinary glutamine levels reflect metabolic and kidney function. Abnormal results can indicate metabolic disorders or kidney stress that may warrant further investigation.

Understanding Your Results

Normal Range

30 – 100 nmol/mL

Overview

Glutamine is an amino acid excreted in urine; elevated levels can reflect kidney function changes or metabolic stress. Urinary glutamine measurement helps assess nitrogen metabolism and kidney handling of amino acids. Abnormal levels may indicate metabolic disorders, kidney dysfunction, or systemic illness affecting amino acid metabolism. This test is sometimes used in specialized metabolic screening or when investigating unusual urine composition.

Research & Evidence

100 publications

Sort:
Glutamine metabolic enzymes: to filament or not to filament?
Biochem Soc Trans · 2026
PMID: 42051118
Overview of glutamine metabolism in stromal components of the tumor microenvironment and potential anti-tumor therapies.
Genes Dis · 2026
PMID: 41659204
Targeting glutamine metabolism to modulate macrophage functions in the tumor microenvironment.
Discov Oncol · 2026
PMID: 42032176
Glutamine synthetase: Spotlighting the emerging roles in tumor progression and therapeutic avenues.
Crit Rev Oncol Hematol · 2026
PMID: 41771459
Inhibitory Activity of Conferone on FAK Activity and Glutamine Metabolism in Human Colorectal Cancer.
J Cell Mol Med · 2026
PMID: 42056844
Structural and functional study suggests DnfC is a putative glutamine amidotransferase in the dirammox pathway.
Biochem Biophys Res Commun · 2026
PMID: 41936240
Momordin Ic suppresses breast cancer growth by targeting ACTL8‑dependent glutamine metabolism and PI3K/AKT/mTOR-MYC.
Biochem Pharmacol · 2026
PMID: 41621692
Discovery of the protective effect of glutamine on acute alcoholic liver injury.
Indian J Pharmacol · 2026
PMID: 42060805
Metabolic reprogramming-a breakthrough point in overcoming resistance to BRAF mutant melanoma targeted therapy (Review).
Oncol Lett · 2026
PMID: 41918811
Local Immunometabolic Intervention With Alanyl-Glutamine Resolves Peritoneal Dialysis-Induced Immune Cell Dysfunction.
Kidney Int Rep · 2026
PMID: 42006205

Research data from MEDLINE/PubMed · 100 articles

Technical Information (LOINC Codes)

Standardized laboratory codes for this biomarker

20643-3Primary
Glutamine [Moles/volume] in Serum or Plasma
umol/L
27043-9
Glutamine [Moles/volume] in Urine
nmol/mL
2373-9
Glutamine [Mass/volume] in Urine
mg/dL
2371-3
Glutamine [Presence] in Serum or Plasma
2374-7
Glutamine [Mass/time] in 24 hour Urine
mg/(24.h)
2372-1
Glutamine [Mass/volume] in Serum or Plasma
mg/dL
25430-0
Glutamine [Moles/time] in 24 hour Urine
umol/(24.h)
22720-7
Glutamine [Moles/volume] in Specimen
umol/L
22641-5
Glutamine [Moles/volume] in Cerebral spinal fluid
umol/L
47630-9
Glutamine [Moles/volume] in DBS
umol/L
16917-7
Glutamine [Presence] in Urine
2370-5
Glutamine [Mass/volume] in Cerebral spinal fluid
mg/dL
25919-2
Glutamine [Moles/volume] in 24 hour Urine
umol/L
26806-0
Glutamine [Presence] in 24 hour Urine
26894-6
Glutamine [Moles/volume] in Amniotic fluid
umol/dL
32242-0
Glutamine [Moles/volume] in Vitreous fluid
umol/L
32243-8
Glutamine [Moles/volume] in Body fluid
umol/L
13396-7
Glutamine [Mass/volume] in Amniotic fluid
mg/dL

Available Lab Tests

Order tests that measure this biomarker

Amino Acids (Plasma)

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