Understanding Your Laboratory Test: What It Is and How the Sample Is Collected
This test measures the amount of 2-ethylhydracrylate in the cerebrospinal fluid (CSF), which is the clear fluid surrounding the brain and spinal cord.
{"2-Ethylhydracrylate is a specialized metabolic compound measured in spinal fluid","The test helps doctors evaluate certain metabolic or neurological conditions","Sample is collected via a lumbar puncture (spinal tap) procedure","Results are compared against established normal reference ranges","Your healthcare provider will interpret results based on your specific clinical situation"}
Key facts at a glance
- LOINC
- 69825-8
- Short code
- 2-Ethylhydracrylate CSF
- Synonyms
- 2-ethylhydracrylate CSF-sCnc
- Category
- chemistry
- Sample
- csf
- Container
- Sterile CSF collection tube (polypropylene), preferably without additives
- Units
- N/A
- Ref low
- 1.5
- Ref high
- 9
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- ≥ 0 years
- Method
- Gas chromatography-mass spectrometry (GC-MS) or Liquid chromatography-tandem mass spectrometry (LC-MS/MS)
- CPT
- 82542
- Specimen volume
- 1-2 mL of CSF
- Stability
- Store at -20°C or -80°C if not processed immediately. Avoid repeated freeze-thaw cycles.
- Hemolysis max
- 200
- TAT
- 72–168 hours
- Order
- routine
This laboratory test examines a sample taken from your body to help your doctor check your overall health, look for a possible medical condition, or monitor how well a treatment is working. Your healthcare provider ordered this test because it gives important information about how your body is functioning that cannot be learned from a physical exam alone.
The 2-ethylhydracrylate test measures the concentration of 2-ethylhydracrylate, a specialized chemical compound, in your cerebrospinal fluid (CSF). CSF is the clear, protective fluid that surrounds your brain and spinal cord. This test is part of a specialized panel typically ordered to evaluate certain metabolic disorders or neurological conditions.
A trained healthcare professional will collect the sample, most often a small amount of blood drawn from a vein in your arm, although some tests use a urine, saliva, or swab sample instead. The collection area will be cleaned with an antiseptic wipe first, and only sterile, single-use equipment will be used to keep the process safe.
The CSF sample is collected through a procedure called a lumbar puncture, commonly known as a spinal tap. During this procedure, a healthcare provider inserts a thin needle between the bones in your lower spine to collect a small amount of CSF. The procedure is usually performed while you lie on your side or sit upright.
During the procedure, you may feel a quick pinch or brief sting when the needle goes in, but the whole process usually takes only a few minutes to complete. After the sample is collected, a small bandage will be placed over the site, and you can normally return to your regular activities right away unless your provider gives you other instructions.
Before the procedure, your doctor will explain the risks and benefits. You may be asked to lie still in a curled position. A local anesthetic will be used to numb the area. You may feel some pressure or a brief sting during the needle insertion. After the sample is collected, you may be advised to lie flat for a short time to reduce the risk of headache.
Reference range
Follicular: 1.5-9.0 mIU/mLN/A
No special preparation required. Inform patient about lumbar puncture procedure. Standard CSF collection precautions apply.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Elevated or decreased levels of 2-ethylhydracrylate in CSF may indicate certain metabolic disorders, hereditary conditions, or other neurological abnormalities. This test is typically ordered by specialists (such as neurologists or metabolic specialists) as part of a comprehensive evaluation when specific conditions are suspected. Your doctor will interpret your results in the context of your symptoms, medical history, and other test findings.
Frequently asked questions
Is this a routine test?
How long does it take to get results?
Are there any risks associated with the lumbar puncture?
Do I need to prepare for the test?
Sources
- 1
- 2
- 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