Glycine

The simplest amino acid, important for collagen and detoxification.

Last reviewedJune 16, 2026

Plasma

sample type

~5 mL

blood needed

~7 days

results in app

Morning, fasting

best timing

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

In short

Glycine is the smallest amino acid. The body can make it, and it has many roles. It helps build proteins and collagen, takes part in making the antioxidant glutathione, and acts as a signalling molecule in the nervous system.

Comprehensive Health Check

Reviewed against DGKL reference practice.

Why test this?

It is measured as part of a plasma amino acid profile. Levels reflect protein metabolism and several pathways that depend on glycine. A clearly raised level can point to inherited disorders of glycine handling 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	126 to 490 µmol/L

Sources: ARUP Laboratories Test Directory: Amino Acids, Quantitative, Plasma

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 protein metabolism and glycine-dependent pathways.
Context for collagen, glutathione, and nervous system roles.
A possible signal of inherited glycine handling disorders if clearly raised.

What can affect this result?

What can skew the result

Recent protein intake, glycine supplements, fasting state, and time of day 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.