Homocarnosine in Cerebrospinal Fluid (CSF)
This test measures the concentration of homocarnosine, a naturally occurring compound found in the cerebrospinal fluid (CSF). It may be used to assess certain neurological or metabolic conditions.
["This test helps evaluate potential neurological or metabolic disorders by measuring homocarnosine levels in your spinal fluid."]
Key facts at a glance
- LOINC
- 75638-7
- Short code
- Homocarnosine CSF-sCnc
- Synonyms
- Homocarnosine CSF-sCnc
- Category
- chemistry
- Sample
- csf
- Container
- Sterile tube
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Specimen volume
- 1-2 mL
- Stability
- Immediate analysis required, Refrigerated: 1h
- Hemolysis max
- 200
- TAT
- 4–24 hours
- Order
- routine
Why Might This Test Be Ordered?
Your healthcare provider may recommend this test if they suspect conditions like hereditary metabolic disorders, neurodegenerative diseases, or other conditions affecting brain chemistry. It could also be part of a broader evaluation for symptoms such as cognitive impairment, movement disorders, or developmental delays.
What Does This Test Involve?
A sample of cerebrospinal fluid is collected through a procedure called a lumbar puncture (spinal tap). The fluid is then analyzed in a laboratory to measure homocarnosine levels.
What Does a Result Mean?
Results are typically compared to reference ranges specific to the lab, though exact values may not always be provided. Elevated or low levels could indicate specific metabolic or neurological conditions that require further medical evaluation.
What Are the Possible Clinical Significances?
Homocarnosine is involved in neurotransmitter metabolism. Abnormal levels in CSF may be associated with certain genetic disorders, such as those affecting amino acid metabolism or neurotransmitter pathways. This test can help diagnose or monitor conditions like homocarnosinemia or related metabolic syndromes.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Homocarnosine levels in CSF may be relevant in diagnosing rare genetic disorders affecting neurotransmitter processing or in assessing conditions linked to abnormal amino acid metabolism in the central nervous system. Consult your doctor for interpretation of results in the context of your symptoms and medical history.
Short name
Homocarnosine CSF
Frequently asked questions
What does homocarnosine measure in the CSF?
How is this test different from other CSF tests?
Is this test painful?
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