The PDW (Platelet Distribution Width) test assesses the variability in platelet size within the blood, providing insights into platelet function. Platelets play a crucial role in blood clotting, inflammation, and immune system responses. Deviations in PDW values can be observed in various medical conditions, with elevated or reduced levels potentially indicating different types and impacts of disease. A PDW test, often part of a complete blood count (CBC), can help identify underlying conditions such as diabetes, certain cancers, respiratory issues, and cardiovascular diseases. Furthermore, it aids in detecting potential bone marrow disorders. Common clinical indications for requesting a PDW test include:
* Easy bruising or unexplained contusions
* Unexplained injuries
* Impaired blood clotting
* Gum bleeding
* Blood in stool
* Nosebleeds
* Gastrointestinal bleeding
* Heavy menstrual bleeding
* Presence of petechiae (small red spots under the skin)