Anti Proteinase 3 Antibody Positivity C5539682
An antibody associated with certain types of vasculitis affecting blood vessels. Primarily seen in adults and can involve multiple organs. Treatment usually includes immunosuppressive medications.
Key facts at a glance
- ICD-10
- D89.9
- ICD-11
- 3A00.0
- Body system
- immunologic
- Severity
- severe
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Warning signs - seek immediate care
Hemoptysis
Purpuric skin lesions
Generalized symptoms
(immunologic)Significant symptoms that substantially affect daily functioning.
Frequency: Common at all stages
Nasal crusting
(ENT)Proteinuria
(urinary)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
Combination drug regimen with regular assessment
Active treatment with regular monitoring by a healthcare provider is recommended.
Induction immunosuppression
Aggressive immunosuppressive therapy with agents like cyclophosphamide or rituximab to induce remission in ANCA-associated vasculitis.
ANCA and organ function surveillance
Regular monitoring of PR3-ANCA levels, renal function, and pulmonary status to detect and treat relapses early.
Additional treatment options
Plasmapheresis
Therapeutic plasma exchange to remove circulating antibodies and immune complexes in severe or refractory cases.
procedureMaintenance immunosuppression
Long-term lower-dose immunosuppression with azathioprine or methotrexate to maintain remission and prevent flares.
medicationInfection prevention
Rigorous hygiene, vaccination, and avoidance of sick contacts due to increased infection risk from immunosuppression.
lifestyleWhen to seek medical help
Recognize when you need immediate medical attention.
See a doctor within 24 hours
Moderate to severe symptoms that may indicate worsening of this condition. Prompt medical evaluation is recommended.
Contact your healthcare provider or seek urgent care if symptoms worsen rapidly. Go to the emergency department for life-threatening symptoms.
Frequently asked questions
Common questions about this topic.
What is Anti Proteinase 3 Antibody Positivity C5539682?
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.
Mukhtyar CB, Hellmich B, Gross WL, Luqmani RA. European Vasculitis Study Group recommendations for managing ANCA-associated vasculitis. Rheumatology. 2021.
Schirmer JH, Moosig F, Csernok E, Holle JU. Proteinase 3-antineutrophil cytoplasmic antibodies: clinical significance and therapeutic implications. Autoimmun Rev. 2020.
Furuta S, Iwamoto T, Nakajima H. Comparison of rituximab versus cyclophosphamide for induction of remission in PR3-ANCA vasculitis. Lancet Rheumatol. 2019.
Kronbichler A, Shin JI, Lee KH, Nakagawa N. Efficacy of rituximab in ANCA-associated vasculitis: systematic review and meta-analysis. Arthritis Rheumatol. 2022.
Medication Comparisons
Compare medications used to treat Anti Proteinase 3 Antibody Positivity C5539682. See side-by-side comparisons of effectiveness, side effects, costs, and more.
View Medication ComparisonsThis information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
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 20, 2026. · Read our editorial policy