What is PDW test? Platelet distribution width test- use normal range and result interpretation.. Platelet Distribution Width (PDW) is a blood test parameter that measures the variation in platelet size within a blood sample. It is part of a complete blood count (CBC) and helps assess platelet production and activation. A normal PDW indicates uniform platelet size while a high PDW suggests a mix of large and small platelets often seen in disorders like thrombocytopenia inflammation or bone marrow diseases. Low PDW may be associated with reduced platelet production. PDW along with Mean Platelet Volume (MPV), is useful in diagnosing platelet-related conditions and monitoring treatment effectiveness in patients with clotting or bleeding disorders. #pdwtest #plateletdistributionwidth #pdwtestuse #plateletcount #thrombocytopenia #pdwtestkyahai #cbctest