: SNAP-25 Amplitude (Serum/Plasma) by Immunoassay
: This test measures the amount of SNAP-25, a synaptic vesicle protein, in a serum or plasma sample using an immunoassay method. It is not a standard routine blood test and is used mainly in specialized research or neurology contexts.
[": SNAP-25 amplitude testing measures a neuronal protein in blood and is primarily a specialized or research-oriented test rather than a routine screening test."]
Key facts at a glance
- LOINC
- 98659-6
- Short code
- SNAP amplitude L sural n
- Synonyms
- SNAP amplitude L sural n
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- nerve-conduction
- Specimen volume
- 5 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
: What Is SNAP-25?
: SNAP-25 (synaptosomal-associated protein 25) is a protein found at the junctions between nerve cells, where it helps vesicles release signaling molecules. Because small amounts can leak into the bloodstream, it can sometimes be measured in blood, but this is not a common clinical measurement.
: Why Might This Test Be Ordered?
: This test is generally used in research or specialty settings to study nerve-cell function or certain neurological conditions. It is not typically part of standard diagnostic panels, so your doctor would order it only for a specific reason that should be discussed with you.
: How the Sample Is Collected
: A standard blood draw from a vein provides the serum or plasma sample. No special preparation is usually required unless your care team instructs otherwise.
: Understanding Your Result
: Results are interpreted by the ordering clinician in the context of your symptoms, history, and other tests. Because this is a specialized measurement, there is no universal reference range that applies to everyone, so ask your provider what your result means for you.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
: NONE
Frequently asked questions
: Is this a routine blood test?
: Do I need to fast before this test?
: Can this test diagnose a neurological condition on its own?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
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.
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