Overview: Platelet Count Fluorescent TestIntroduction: The Platelet Count Fluorescent Test measures platelets using fluorescence to diagnose thrombocytopenia, causing bleeding. Following 2023 ASH guidelines, it uses advanced hematological methods for high specificity, supporting blood disorder screening. This test is critical for guiding diagnosis, treatment planning, and improving outcomes in hematology for patients with suspected thrombocytopenia.
Other Names: PLT-F Assay, Fluorescent Platelet Count Test.
FDA Status: Laboratory-developed test (LDT), meeting hematology standards for diagnostic accuracy.
Historical Milestone: Fluorescent platelet counting began in the 2000s with flow cytometry advancements. Methods improved in the 2010s, enhancing diagnostic precision.
Purpose: Measures platelets using fluorescence to diagnose thrombocytopenia, guides treatment, and evaluates patients with bleeding.
Test Parameters: 1. Fluorescent Platelet Count
Pretest Condition: No fasting required. Collect whole blood. Report history of bleeding or thrombocytopenia symptoms.
Specimen: Whole Blood (EDTA, 2-5 mL). Transport in a biohazard container.
Sample Stability at Room Temperature: 24 hours
Sample Stability at Refrigeration: 48 hours
Sample Stability at Frozen: Not frozen
Medical History: Document bleeding, bruising, or family history of thrombocytopenia. Include current medications, especially chemotherapy agents.
Consent: Written consent required, detailing the tests purpose, thrombocytopenia implications, and risks of sample collection.
Procedural Considerations: Uses flow cytometry with fluorescent dyes to measure platelet count. Results are available in 1-2 days, supporting clinical decisions. Performed in laboratories, often for thrombocytopenia diagnosis.
Factors Affecting Result Accuracy: Improper sample storage or hemolysis can affect results. Clumping may reduce accuracy.
Clinical Significance: Low fluorescent platelet count confirms thrombocytopenia, guiding transfusions or therapy. Normal counts may require further evaluation.
Specialist Consultation: Consult a hematologist for result interpretation and treatment planning.
Additional Supporting Tests: Peripheral smear, bone marrow biopsy, or standard platelet count to confirm thrombocytopenia diagnosis.
Test Limitations: Non-specific for certain thrombocytopenia causes; clinical correlation is needed. Sample quality affects sensitivity.
References: ASH Thrombocytopenia Guidelines, 2023; Blood, Harrison P, 2022.
