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  1. What is the difference between an aliquot and

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  1. derivative?
    When a sample is divided into smaller portions which are similar in characteristics like the parent, they are called aliquots. E.g., a 10 ml blood tube is aliquoted into 10x1 ml tubes. They only differ in quantity. Derivatives are

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  1. processed outcome of a parent specimen which differ in characteristics like type

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  1. and pathological status

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  1. . E.g. a DNA, RNA, plasma, etc.

  2. Is aliquot the lowest level of specimen, and can’t have any derived specimen from it?

No, there is no restrictions, derivatives can be created from aliquot at any level. 

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  1. There are no restrictions. Derivatives can be aliquoted and aliquots can be further processed.

  2. If we have a tissue which will have RNA, DNA and protein from it.  Then the tissue has to be a derivative or parent specimen, right?
    Tissue will be parent

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  1. specimen. RNA, DNA, Protein will be derivatives of the tissue.

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  1. Can aliquot has different information such as tissue specimen review information from their parents?
    Yes, additional/different events like tissue specimen review event can be added at child level.

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