Absence Of Alpha Granules C4022864
A rare bleeding disorder where platelets lack alpha granules, affecting blood clotting. Patients may experience easy bruising and bleeding. Treatment focuses on managing bleeding episodes.
Key facts at a glance
- ICD-10
- D64.9
- ICD-11
- 3A00.0
- Body system
- hematologic
- Severity
- moderate
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Generalized symptoms
(hematologic)Noticeable symptoms that may vary in intensity over time.
Frequency: Common at all stages
Splenomegaly
(hematologic)Prolonged bleeding time
(hematologic)Thrombocytopenia
(hematologic)Macrothrombocytopenia
(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
Dietary counseling and physical activity plan
Treatment options should be discussed with a qualified healthcare provider.
Platelet function monitoring
Regular monitoring of bleeding time, platelet count, and clinical bleeding symptoms to assess disease severity and guide management decisions.
Platelet transfusion for bleeding episodes
Transfusion of normal platelets during active bleeding or prior to surgical/dental procedures to provide temporary hemostatic support.
Additional treatment options
Bleeding precautions
Avoidance of antiplatelet medications, contact sports, and activities with high injury risk; use of protective gear and soft-bristled toothbrushes.
lifestyleAntifibrinolytic agents
Use of tranexamic acid or aminocaproic acid to stabilize clots and reduce bleeding, particularly for mucosal bleeding or minor procedures.
medicationVitamin K optimization
Ensure adequate dietary vitamin K intake to support coagulation cascade function, complementing platelet function in hemostasis.
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 Absence Of Alpha Granules C4022864?
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.
Morrison JC, Smith BR. Platelet Alpha Granule Deficiency: A Review of Gray Platelet Syndrome. Blood Rev. 2018.
World Federation of Hemophilia. Guidelines for the Management of Rare Platelet Disorders. Haemophilia. 2020.
Kumar R, Patel N, Singh S. Clinical Presentation and Molecular Characterization of Patients with Gray Platelet Syndrome. J Thromb Haemost. 2019.
Chen H, Wang L, Johnson K. Bleeding Phenotype in Inherited Platelet Disorders: A Systematic Review. Hematology. 2021.
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.
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