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Sarcosine in Serum or Plasma (Mass Concentration)

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

This test measures the amount of sarcosine, a small molecule found in your blood, which may be linked to certain metabolic or neurological conditions.

Quick summary

["Sarcosine levels can help assess metabolic health or be part of specialized diagnostic testing."]

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

Key facts at a glance

LOINC
26932-4
Short code
Sarcosine Amn-sCnc
Synonyms
Sarcosine Amn-sCnc
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

What Is Sarcosine?

Sarcosine is an amino acid derivative that plays a role in metabolism and may be involved in nerve function. While it’s naturally present in the body, elevated levels can sometimes indicate underlying health concerns.

Why Might You Need This Test?

Your healthcare provider may order this test if you have symptoms or conditions like metabolic disorders, neurological issues, or if you’re being evaluated for a specific genetic or biochemical condition.

How Is the Test Performed?

A blood sample is drawn from a vein in your arm. The sample is then processed and analyzed to measure sarcosine concentration using a specialized laboratory technique.

What Does the Result Mean?

Results are not typically provided as a single reference range, as sarcosine levels can vary widely depending on individual health, diet, and medical conditions. Your provider will interpret the result in the context of your overall health and symptoms.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Sarcosine Level

Frequently asked questions

How often is this test used in routine care?
This test is not commonly performed as a routine screening test. It is usually ordered based on specific clinical concerns, such as suspected metabolic or neurological conditions, or as part of specialized diagnostic workups.
What are common causes of abnormal sarcosine levels?
Abnormal sarcosine levels can result from underlying metabolic disorders, certain medications, or conditions affecting nerve function. However, individual results depend on many factors, including diet, genetics, and overall health.
Can diet or lifestyle affect sarcosine levels?
Yes, diet and lifestyle factors may influence sarcosine levels. Certain foods, supplements, or metabolic conditions can impact its concentration in the blood. Your provider may discuss lifestyle recommendations if this test is part of your evaluation.
  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