Elevated Circulating Complement Factor H Related Protein 1 Concentration C5539495
An elevated level of a protein that regulates part of the immune system. May suggest inflammation or immune system activation. Further testing helps determine the significance and guide next steps.
Key facts at a glance
- ICD-10
- D89.9
- ICD-11
- 3A00.0
- Body system
- immunologic
- Severity
- mild
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Generalized symptoms
(immunologic)Mild symptoms that may not significantly impact daily life.
Frequency: Common at all stages
Proteinuria
(renal)Hematuria
(renal)Peripheral edema
(cardiovascular)Hypertension
(cardiovascular)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
Complement C5 inhibitor therapy
Monoclonal antibody therapy targeting the terminal complement pathway, commonly used in complement-mediated disorders like atypical HUS. Regular intravenous infusions maintain therapeutic levels.
Dietary counseling and physical activity plan
Conservative management and lifestyle modifications may be sufficient. Monitor symptoms.
Plasma exchange therapy
Therapeutic plasma exchange removes pathologic complement factors and replaces with fresh frozen plasma or albumin. Used as acute intervention or bridge therapy while initiating targeted treatments.
Additional treatment options
Renal function surveillance
Close monitoring of kidney function including serial creatinine, eGFR, urinalysis for proteinuria and hematuria. Early detection of renal involvement allows timely intervention.
monitoringCardiovascular risk management
Aggressive blood pressure control, lipid management, and smoking cessation to reduce vascular injury risk. Complement-mediated diseases often involve microvascular complications.
lifestyleRenal-protective nutrition
Sodium restriction, adequate hydration, and appropriate protein intake tailored to renal function status. Reduces strain on kidneys and supports overall vascular health.
dietaryWhen 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 Circulating Complement Factor H Related Protein 1 Concentration C5539495?
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.
Zipfel PF, Skerka C. Complement factor H related proteins in disease. Adv Exp Med Biol. 2019.
Smith RJH, Appel GB, Brenchley PE, et al. International consensus statement on the diagnosis and management of complement-mediated diseases. Kidney Int Suppl. 2018.
Ferreira VP, Herbert AP, Barlow PN. Complement factor H-related protein 1 in inflammatory conditions. J Immunol. 2017.
Skerka C, Chen Q, Fremeaux-Bacchi V, Roumenina LT. Biological functions of complement factor H related protein 1. Front Immunol. 2021.
Medication Comparisons
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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.
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Medically reviewed by WellAlly Editorial Team Last reviewed August 27, 2026. · Read our editorial policy