Abgpcsfscnc

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

A specialized laboratory test that measures the level of amino beta guanidinopropionate, a creatine-like compound, in the cerebrospinal fluid surrounding the brain and spinal cord.

Quick summary

{"This test analyzes cerebrospinal fluid (CSF) for a specific compound called amino beta guanidinopropionate","CSF is collected via a lumbar puncture (spinal tap) procedure","This is primarily a research test used to study brain metabolism and neurological conditions","Results help researchers understand how certain compounds affect brain function"}

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

Key facts at a glance

LOINC: 27337-5
Short code: CSF Amino beta guanidinopropionate
Synonyms: AB-Gp CSF-sCnc
Category: chemistry
Sample: csf
Container: Sterile polypropylene cryovial or sterile CSF collection tube
Units: N/A
Fasting: false
Population: adult
Sex: all
Age range: ≥ 18 years
Method: Liquid chromatography-tandem mass spectrometry (LC-MS/MS)
SNOMED: 122465004
Specimen volume: 1-2 mL of CSF
Stability: Store at -20°C for up to 7 days; at -80°C for longer storage. Avoid repeated freeze-thaw cycles.
Hemolysis max: 200
TAT: 72–168 hours
Order: routine

What is this test?

The cerebrospinal fluid amino beta guanidinopropionate test measures the concentration of amino beta guanidinopropionate (also known as beta-guanidinopropionic acid) in your cerebrospinal fluid. This compound is a structural analog of creatine, a substance naturally found in the body that helps supply energy to muscles and tissues. The test requires a sample of cerebrospinal fluid, which is the clear fluid that cushions and surrounds your brain and spinal cord.

Reference range

No established reference range. Results are interpreted in clinical context in conjunction with other metabolic and neurological markers.N/A

Specimen: csf

No special preparation required. Standard lumbar puncture procedure precautions apply. Inform healthcare provider of any anticoagulant medications or bleeding disorders.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Frequently asked questions

How is the CSF sample collected?

The sample is collected through a procedure called lumbar puncture, also known as a spinal tap. A healthcare provider inserts a thin needle between the bones in your lower spine to withdraw a small amount of cerebrospinal fluid. The procedure is performed under sterile conditions and usually takes about 15-30 minutes.

Does the test require any special preparation?

Your healthcare provider will give you specific instructions. Generally, you may need to fast for several hours before the procedure. Inform your doctor about any medications you're taking, as some drugs may need to be temporarily stopped. Discuss any bleeding disorders or allergies to anesthetics with your healthcare provider.

Is the lumbar puncture procedure painful?

You may feel some discomfort or pressure during the procedure. A local anesthetic is usually injected to numb the area, which may cause a brief burning sensation. After the procedure, you may experience a mild headache, which can typically be relieved with rest and hydration.

When will I get my results?

Results may take several days to weeks because this is a specialized test often performed in research laboratories. Your healthcare provider will contact you with the results and explain what they mean for your specific situation.

Sources

1
LOINC Code ReferenceSource
2
Cerebrospinal Fluid AnalysisSource

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