The term WORD AFTER BETA OR BLOOD is solved by the four letter word TEST. This word is commonly used in a variety of contexts, such as medical testing, academic testing, and product testing. In the medical context, it is often used to refer to a blood TEST, which is used to measure the levels of various substances in the blood. In the academic context, it is used to refer to an assessment or exam that is used to measure a student's knowledge or skills. In the product context, it is used to refer to a process of evaluating a product to ensure that it meets certain standards.