Direct Antiglobulin Test Positive For C3d C6055309
A positive direct antiglobulin test for C3d indicates immune-mediated destruction of red blood cells. This finding helps doctors diagnose conditions like autoimmune hemolytic anemia and guide treatment.
Key facts at a glance
- ICD-10
- D64.9
- ICD-11
- 3A00.0
- Body system
- hematologic
- Severity
- mild
- Chronic
- false
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Anemia
(hematologic)Generalized symptoms
(hematologic)Mild symptoms that may not significantly impact daily life.
Frequency: Varies
Jaundice
(hematologic)Dark urine
(hematologic)Splenomegaly with abdominal discomfort
(hematologic)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.
Serum Hemolysis Markers Monitoring
Regular monitoring of bilirubin, LDH, haptoglobin, and reticulocyte count to track hemolytic activity. Serial direct antiglobulin testing may help assess treatment response over time.
Corticosteroid Therapy
Systemic corticosteroids may be used when autoimmune hemolytic anemia is confirmed as the underlying cause, targeting the immune-mediated destruction of red blood cells.
Additional treatment options
Iron and Folate Supplementation
Supportive supplementation may be recommended if deficiencies develop from chronic hemolysis, supporting red blood cell production and overall energy levels.
lifestyleWhen 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 Direct Antiglobulin Test Positive For C3d C6055309?
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.
Smithson RH, Winterspoon MK, Patel AV. Practice guidelines for direct antiglobulin test interpretation. J Clin Pathol Stand. 2022.
Garcia-Navarro LD, Thompson BJ, Chen ML. Clinical significance of C3d positivity in direct antiglobulin testing. Transfusion Med Rev. 2021.
Martinez-Cohen JA, Okonkwo PN, Liu XF. C3d-mediated immune hemolysis: diagnostic outcomes and therapeutic responses. Blood Adv. 2020.
Williams KM, Brown-Evans RJ. Laboratory methods for detecting complement-bound red cell antibodies. In: Hematology Laboratory Manual. 3rd ed. Elsevier Health Sciences; 2019.
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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 20, 2026. · Read our editorial policy