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Human normal immunoglobulin (HNIG) is another name for immune globulin or immunoglobulin. It is a substance obtained from the blood of human donors. Human normal immunoglobulin is marketed under a variety of brand names. It is available for intramuscular injection (IGIM), subcutaneous injection (SCIG) and, more commonly, intravenous injection (IVIG or IGIV). It contains general antibodies that are not specific to a particular infection. It is administered to people with weakened immune systems caused by primary immunodeficiency (PI), idiopathic thrombocytopenic purpura (ITP) and chronic inflammatory demyelinating polyneuropathy (CIDP). It is not intended for use in patients with acquired immune deficiencies.
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