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N-acetylneuraminic acid (Neu5Ac) in serum/plasma by immunoassay

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

This test measures the amount of N-acetylneuraminic acid (a type of sugar molecule) in your blood. It may be used in research or specialized diagnostic contexts.

Quick summary

["This test helps assess certain metabolic or genetic conditions involving sialic acid metabolism."]

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

Key facts at a glance

LOINC
82185-0
Short code
N men DNA CSF Ql NAA+n-prb
Synonyms
N men DNA CSF Ql NAA+n-prb
Category
chemistry
Sample
csf
Container
Sterile tube
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
non-probe-amp-tar
Specimen volume
1-2 mL
Stability
Immediate analysis required, Refrigerated: 1h
Hemolysis max
200
TAT
4–24 hours
Order
routine

What Is This Test Measuring?

N-acetylneuraminic acid (Neu5Ac) is a key component of glycoproteins and glycolipids found in blood. This test specifically quantifies its concentration, which can be relevant in studies of sialic acid disorders or biochemical research.

Why Might You Need This Test?

While not routinely ordered for general health screening, this test may be considered in cases where doctors suspect inherited metabolic disorders affecting sialic acid metabolism or specialized research studies.

Sample Collection and Preparation

Blood is drawn from a vein, typically in the arm. The sample is processed into either serum (after clotting) or plasma (using an anticoagulant) for analysis.

Test Method and Process

This test uses an immunoassay technique to detect and quantify Neu5Ac. The method detects specific antibodies that bind to the sugar molecule, allowing precise measurement.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance: Neu5Ac Levels Can Indicate Specific Genetic or Metabolic Conditions

Short name

Neu5Ac Level

Frequently asked questions

How often will I need this test?
This test is generally not part of standard medical check-ups. It may be ordered only in specialized clinical scenarios, such as research studies or when investigating rare genetic disorders.
What are the possible results and what do they mean?
Results are reported as a concentration value (mass concentration) of Neu5Ac in serum/plasma. Interpretation depends on clinical context and may require consultation with a healthcare provider familiar with sialic acid metabolism disorders.
Are there any risks or side effects from this test?
Standard blood draws carry minor risks like bruising or slight discomfort. No specific risks are associated with this particular test beyond those of routine venipuncture.
  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