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Lepromin
The lepromin skin test is used to determine what type of leprosy a person has. It involves the injection of a standardized extract of the inactivated "leprosy bacillus",(''Mycobacterium leprae'' or "Hansen's Bacillus") under the skin. It is not recommended as a primary mode of diagnosis.
==How the test is performed==
Positive reaction means. A) 10mm or more induration after 48hrs B) 5mm or above nodule after 21days
An extract sample of inactivated Hansen's Bacillus is injected just under the skin, usually on the forearm, so that a small lump pushes the skin upward. The lump indicates that the antigen has been injected at the correct depth. The injection site is labeled and examined at 48hours and 21 days later to see if there is a reaction.
People with dermatitis or other skin irritations should have the test performed on an unaffected part of the body. If a child needs to have this test performed, it may be helpful to explain how the test will feel, and even practice or demonstrate on a doll. The more familiar the child is with what will happen and why, the less anxiety he or she will feel. When the antigen is injected, there may be a slight stinging or burning sensation. There may also be mild itching at the site of injection afterwards.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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