Platelet count
by: Joe Hing kwok Chu
Adult normal range: 150,000 ~ 400,000 µL
Pediatric Reference Range: Newborns 1 week: 150,000 ~ 250,000 µL
Purposes of test:
Lower than normal:
thrombocytopenia which can be caused by hemorrhagic diseases,
acute myelocytic leukemia, drug allergy, congenital causes and
neutropenia.
Higher than normal (thrombocytosis):
polycythemia (high red cell count), essential
thrombocytosis, following spleenectomy, infections, anemia, iron deficiency, malignant lymphoma, hemorrhage, response to exercise.
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