Addressing the problem of reject sample requires cooperative engagement from all stakeholders, including healthcare providers and laboratories. Here are multiple solutions for implementation. Increase the number of employees as much as possible and train them. Training personnel on proper blood collection techniques to ensure adequate mixing of blood and EDTA. Implementing a clear protocol for timely processing of blood samples. Using appropriate blood collection tubes designed to minimize the risk of clot formation. Regularly monitoring and maintaining equipment to ensure optimal performance during sample analysis.