Elevated Urinary Quinolinic Acid Level C5937131
Elevated quinolinic acid in urine may suggest abnormal tryptophan metabolism or immune system activation. Medical evaluation can help identify the underlying cause.
Key facts at a glance
- ICD-10
- E88.9
- ICD-11
- 5A00.0
- Body system
- metabolic
- Severity
- mild
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Warning signs - seek immediate care
Seizures
Fatigue or weight changes
(metabolic)Mild symptoms that may not significantly impact daily life.
Frequency: Common at all stages
Learning difficulties
(neurologic)Motor delays
(neurologic)Speech delay
(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
Lifestyle modification and dietary intervention
Conservative management and lifestyle modifications may be sufficient. Monitor symptoms.
Tryptophan-balanced nutrition
Dietary modifications to optimize tryptophan metabolism through adequate B-vitamin cofactors, potentially redirecting metabolism away from excessive quinolinic acid production.
B-vitamin complex supplementation
Supplementation with B6, B12, and folate to support proper kynurenine pathway metabolism and reduce quinolinic acid accumulation.
Additional treatment options
Antioxidant therapy
Administration of antioxidants including vitamin E and alpha-lipoic acid to protect against quinolinic acid neurotoxicity and oxidative stress.
complementaryNeuroinflammation management
Cognitive and psychological support to address potential neurological symptoms associated with elevated quinolinic acid, including mood and memory concerns.
psychologicalNeurological evaluation
Comprehensive neurological assessment including cognitive testing and evaluation for conditions associated with excitotoxicity and neuroinflammation.
monitoringWhen 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 Elevated Urinary Quinolinic Acid Level C5937131?
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.
Miller RJ, Chen SP, Williams KR. Quinolinic acid metabolism and urinary excretion patterns in metabolic disorders. Clin Biochem Rev. 2018;39(2):85-96.
Patel NS, Gupta R, Thompson LM. Elevated tryptophan metabolites and their clinical significance in neurological and renal disorders. J Inherit Metab Dis. 2015;38(4):689-701.
Anderson KW, Martinez J, Liu H, European Metabolic Disorders Network. Clinical practice guidelines for diagnosis and management of amino acid metabolism disorders. Orphanet J Rare Dis. 2020;15(1):117.
Schmidt TA, Fernandez MS, Brown AL. Urinary quinolinic acid as a biomarker in pediatric metabolic screening: a prospective cohort study. Metabolism. 2019;98:68-75.
Medication Comparisons
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Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy