Individual tests

Interleukin-6 (IL-6) is a protein that helps regulate immune responses, which makes the IL-6 test potentially useful as a marker of immune system activation. This test may be used to help evaluate a person who has a condition associated with inflammation, such as lupus, rheumatoid arthritis, or with infections like sepsis.
Prothrombin is a protein from your liver that acts as a clotting (coagulation) factor. If your blood clots too slowly, you may bleed excessively after an injury. If your blood clots too fast, the clots may harm your heart or brain. A prothrombin time (PT) test measures how long it takes for a clot to form.
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