Infection markers are typically measured through blood tests. Here are some common methods:
Blood Samples: Blood is drawn from a vein and sent to the laboratory for analysis. This is the most common method for measuring CRP, WBC count, procalcitonin, and ESR. Microbiological Cultures: Blood cultures and other body fluids (e.g., urine, sputum) are used to identify the presence of pathogens. Rapid Diagnostic Tests: Some infection markers can be measured using point-of-care tests, which provide quick results and are useful in emergency situations.