Glutamine

The most abundant amino acid, important for gut and immune health.

Last reviewedJune 16, 2026

Plasma

sample type

~5 mL

blood needed

~7 days

results in app

Morning, fasting

best timing

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On this page

Why test Reference ranges What you'll learn What affects it How testing works Sources FAQ

In short

Glutamine is the most abundant amino acid in the blood. The body can make it, but demand rises during illness, injury, and intense exercise. It carries nitrogen between tissues, fuels the gut and immune cells, and helps maintain acid-base balance.

Comprehensive Health Check

Reviewed against DGKL reference practice.

Why test this?

It is measured as part of a plasma amino acid profile. As the most plentiful amino acid in blood, it gives a useful picture of overall protein and nitrogen metabolism. A clearly raised level can point to problems clearing ammonia and is interpreted alongside the rest of the panel.

What is a normal result?

Aniva reads your result against research-backed ranges, not just the lab's wide normal. The reference shown below is specific to this biomarker.

Adult reference values as used by Aniva. Ranges are guidance and can vary by laboratory and method.

Group	Normal range
Adults	431 to 691.6 µmol/L

Sources: Yamamoto 2016 plasma amino acids

Your Aniva report reads your result against these values together with your age, sex and the rest of your panel.

Ranges are guidance and vary by lab and assay, aligned with DGKL practice. Always read your result against your own lab's reference interval.

What insights will this test give you?

A view of overall protein and nitrogen metabolism.
Context for gut and immune cell fuel supply.
A possible signal of ammonia handling problems if clearly raised.

What can affect this result?

What can skew the result

Recent protein intake, glutamine supplements, fasting state, time of day, and delays in processing the sample affect the result. A fasting morning sample gives the most reliable reading.

Best interpreted with

Read as part of the full plasma amino acid profile.

How is this tested?

Sample

Plasma

Blood needed

~5 mL

Method

Ion-exchange chromatography or LC-MS/MS

Best timing

Morning, fasting

Sources. The evidence behind this

Mayo Clinic Laboratories: Amino Acids, Quantitative, Plasma
MedlinePlus: Plasma amino acids

Common questions

Which Aniva panels include this marker?

Amino Acids

These tests assess essential, non-essential, and branched-chain amino acids, plus related metabolites and functional ratios.