Overview
Platelet count below report-specific reference interval.
Classification
See platelet-disorders-lookup for mechanism table.
Morphologic Features
Reduced platelets or clumps, distinguish carefully.
Laboratory Characteristics
- Critical value policy per GP47-aligned SOP
Reference Intervals
Institution-specific severity bands.
Clinical and Laboratory Significance
Pattern framing, not disease diagnosis from count alone.
Differential Considerations
Multiple etiologies per mechanism branch.
Comparison Tables
Classification Frameworks
Laboratory Notes
- Verify before critical release when clump flag present.
References
Authoritative textbooks, guidelines, and reviews supporting this reference entry. Verify reference intervals, critical limits, and reflex criteria against institutional protocols and current guideline editions.
Textbooks
- McPherson RA, Pincus MR. Henry's Clinical Diagnosis and Management by Laboratory Methods. 24th ed. Elsevier; 2021.
- Rodak BF, Carr JH. Rodak's Hematology: Clinical Principles and Applications. 6th ed. Elsevier; 2020.
- McKenzie SB, Williams JL. Clinical Laboratory Hematology. 4th ed. Pearson; 2022.
- Bain BJ. Blood Cells: A Practical Guide. 5th ed. Wiley-Blackwell; 2015.
CLSI and Professional Guidelines
- Clinical and Laboratory Standards Institute. Reference and Selected Performance Standards for the Automated Complete Blood Cell Count (CBC). CLSI document H26-A2. CLSI; 2010.
- Clinical and Laboratory Standards Institute. Defining, Establishing, and Verifying Reference Intervals in the Clinical Laboratory; Approved Standard. CLSI document EP28-A3c. CLSI; 2010.
- Clinical and Laboratory Standards Institute. Management of Critical- and Significant-Risk Results. CLSI guideline GP47-Ed1. CLSI; 2015.
- Clinical and Laboratory Standards Institute. Collection, Transport, and Processing of Blood Specimens for Testing Plasma-Based Coagulation Assays and Molecular Hemostasis Assays; Approved Guideline. CLSI document H21-A5. CLSI; 2017.
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