The Malaysian Society for Quality in Health (MSQH), recommended a rejection rate of less than 1%. Many studies reported rejection rates of 0.1% to 3.49%. This study was conducted at the UiTM Medical Specialist Centre from January 2019 to October 2019. The blood bank and haematology workstation both rejected 84 (5.7%) and 560 (3.38%) samples, respectively. The main causes of sample rejection were clotted and lysed samples. Most of the rejected samples came from the wards, followed by the emergency department. This study showed the need for improvement in venipuncture techniques and types of equipment.