A full blood count, or FBC, is a very common blood test. Doctors use this to check a person's general health as well as screening for specific conditions, such as anaemia. The number of red cells, white cells and platelets in the blood are checked.
Definition of floor effect: In clinical testing, where the performance being tested is nearly as bad as possible in the treatment and control conditions which precludes the formulation of an effective remedy or solution.
The general effect is one of reduced cardiac output and increased strain on the heart. 1  This increases the risk of cardiac arrest (specifically due to abnormal ventricular heart rhythms) and reduces blood supply to the rest of the body.