Individual tests

A blood type can be classified into four common groups known as the ABO system: A, B, AB, or O. A second system, the Rh system, determines if the blood type is Rh-positive or -negative. Blood typing is a common test before blood transfusions, tissue transplants, and during pregnancy.
A blood type can be classified into four common groups known as the ABO system: A, B, AB, or O. A second system, the Rh system, determines if the blood type is Rh-positive or negative. The ABO type and an Rh test from cord blood determine the newborn's RH and blood type.
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.
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