Threonine

An essential amino acid important for protein structure and metabolism.

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

Threonine is an essential amino acid that comes from food. It is a building block for proteins and is important for making mucus, collagen and elastin, and it carries a side group that can be modified to regulate protein function.

Comprehensive Health Check

Reviewed against DGKL reference practice.

Why test this?

Plasma threonine is part of a full amino acid profile and reflects protein intake and how your body handles this amino acid. Low levels can reflect poor intake. It is read in the context of the whole profile rather than alone.

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	60 to 190 µmol/L

Sources: ARUP Plasma Amino Acids Report

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?

Whether threonine sits in the usual adult fasting range.
A piece of the picture of how your body handles dietary protein.
Context for the other amino acids in your profile.

What can affect this result?

What can skew the result

Results are affected by recent diet, recent protein intake, fasting state and the time of day the sample is taken.

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
StatPearls: Biochemistry, Essential 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.