Abnormal Circulating Sulfur Amino Acid Concentration C4021660
Abnormal levels of sulfur-containing amino acids in the bloodstream. This may suggest a metabolic disorder and typically requires additional testing for proper diagnosis.
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.
Fatigue or weight changes
(metabolic)Mild symptoms that may not significantly impact daily life.
Frequency: Common at all stages
Foul-smelling urine
(metabolic)Developmental delay
(metabolic)Peripheral neuropathy
(metabolic)Gastrointestinal disturbances
(metabolic)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
Amino acid-modified diet
Structured dietary modifications to normalize sulfur amino acid concentrations, potentially including restriction of methionine and supplementation with cysteine or other amino acids as indicated by metabolic testing.
Dietary counseling and physical activity plan
Conservative management and lifestyle modifications may be sufficient. Monitor symptoms.
Amino acid level surveillance
Regular blood testing to monitor sulfur amino acid concentrations and adjust interventions accordingly. Serial measurements help establish treatment efficacy and guide dietary modifications.
Additional treatment options
Metabolic support therapy
When abnormal sulfur amino acid levels indicate metabolic dysfunction, targeted supplementation or medication may be considered to support metabolic pathways. Treatment is individualized based on underlying cause.
medicationProtein intake management
Careful management of dietary protein intake based on individual requirements, balancing adequate nutrition with sulfur amino acid restriction. Working with nutrition specialists ensures optimal protein sources.
lifestyleNutritional counseling and education
Comprehensive education about sulfur amino acid sources in foods and label reading skills. Ongoing counseling supports long-term dietary adherence and helps patients make informed food choices.
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 Circulating Sulfur Amino Acid Concentration C4021660?
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.
Martinez-Gomez MA, Chen KW, Anderson RJ. Clinical practice guidelines for metabolic disorders of sulfur amino acids. J Inherit Metab Dis. 2021.
Patel SM, Williams O, Fernandez RJ. Sulfur amino acid metabolism and related metabolic disorders: a comprehensive review. Metab Brain Dis. 2019.
Tanaka H, Kim JJ, Roberts LM, Nakamura S. Efficacy of dietary intervention in patients with abnormal sulfur amino acid levels: a randomized controlled trial. Nutrients. 2022.
Liu P, Thompson PD, Garcia-Rodriguez JC. Therapeutic approaches for sulfur amino acid metabolism abnormalities: systematic review and meta-analysis. Amino Acids. 2020.
Medication Comparisons
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View Medication ComparisonsThis information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
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Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy