The term ‘inflammatory blood’ is usually used in medical practice to economically describe blood test result deviations that signal an inflammatory process taking place in the body, which can be of very different origins from a simple bacterial infection to serious chronic or even oncological diseases. Some of the most common blood tests for body reactivity evaluation are the complete blood count (which tests blood cells, their number, morphological features, ratio, etc.), erythrocyte sedimentation rate (ESR), C-reactive protein (CRP), protein electrophoresis and many other tests. If, for example, an increased level of leukocytes, left shift, increased ESR, toxic neutrophil granulation, increased CRP or other specific changes are detected, such blood is referred to as ‘inflammatory’.