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Yes they would have to conduct tests on you first.
Only a portion of your liver is required for transplant.
The donor has to be less than 55 years old.
You'll have blood tests to determine if your blood and tissue types are compatible with the organ recipient.
If your blood and tissue is not compatible and/or if you are older than 55 years of age then you cannot donate part of your liver even if you want to.
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