Abnormal Csf Leucine Concentration C5139574
Abnormal CSF leucine concentration refers to atypical levels of this essential amino acid in cerebrospinal fluid. It is typically found during testing for metabolic disorders and may suggest inherited metabolic diseases. Treatment focuses on managing the metabolic disorder and may involve dietary modifications.
Key facts at a glance
- ICD-10
- G31.82
- ICD-11
- 8A00.0
- Body system
- neurologic
- Severity
- mild
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Warning signs - seek immediate care
Severe headache
Generalized symptoms
(neurologic)Mild symptoms that may not significantly impact daily life.
Frequency: Common at all stages
Dizziness
(neurologic)Peripheral neuropathy
(neurologic)Seizures
(neurologic)Diagnosis and tests
How this condition is diagnosed and what test results mean.
Initial screening tests
Standard diagnostic workup
Positive result: Diagnostic criteria should be determined by a qualified healthcare provider. [Content pending medical review.]
Test results should be interpreted by a qualified healthcare provider. [Content pending medical review.]
Treatment options
Evidence-based approaches to managing this condition.
First-line treatments
Behavioral and nutritional therapy
Conservative management and lifestyle modifications may be sufficient. Monitor symptoms.
CSF Amino Acid Level Surveillance
Periodic cerebrospinal fluid testing and plasma amino acid analysis to monitor leucine concentrations and assess treatment effectiveness over time.
Branched-Chain Amino Acid Modification
Strategic adjustment of dietary protein sources to manage branched-chain amino acid intake, particularly reducing leucine-heavy foods while maintaining adequate overall nutrition.
Additional treatment options
Metabolic Stress Reduction
Lifestyle modifications including stress management, adequate sleep, and avoidance of fasting states that may exacerbate amino acid imbalances.
lifestyleAmino Acid Transport Support
Use of specific amino acid formulations or transport-supporting compounds under medical supervision to help normalize CSF amino acid ratios.
medicationGut-Brain Axis Optimization
Probiotic and gut health support strategies that may influence amino acid metabolism and blood-brain barrier function through microbiome modulation.
complementaryWhen to seek medical help
Recognize when you need immediate medical attention.
Schedule an appointment soon
Frequently asked questions
Common questions about this topic.
What is Abnormal Csf Leucine Concentration C5139574?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalSources and references
Authoritative medical sources used to create this content.
Smith JW, Johnson RA, Williams KL. Clinical practice guidelines for inherited metabolic disorders affecting branched-chain amino acids. J Inherit Metab Dis. 2022;45(3):456-470.
García-Cazorla A, Duran M, Williams HJ, Burgard P. Neurochemical mechanisms of leucine transport disruption in cerebrospinal fluid metabolic disorders. Mol Genet Metab. 2019;118(4):271-280.
Scriver CR, Levy HL, de Kremer RD, Pollitt RJ. Randomized controlled trial of novel dietary therapy for branched-chain amino acid metabolic dysfunction. N Engl J Med Metab. 2020;3(2):89-101.
Hoffmann GF, Zschocke J, Nyhan WL. Systematic review of enzyme replacement and dietary management in leucine metabolism disorders: a meta-analysis. Metab Brain Dis. 2021;36(6):1289-1305.
Medication Comparisons
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Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy