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Pre v10.2, this field is called “Aliquot Sequence” and supported only aliquot count.

From v10.2 onwards, the ‘Aliquot Sequence’ field is renamed to ‘Sequence’ which and is available for all the specimens irrespective of the lineage and typeboth aliquot and derived child specimens.

The sequence is computed by grouping the available specimens using their visit ID, parent specimen ID, and specimen type attributes. This means all the primary specimens get sequence based on their visit ID and specimen type attributes. Similarly child specimens get sequence by their parent ID and specimen type attributes.

Following examples will to understand the sequence better.

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Aliquot Example:

Generally, when you search for aliquots, you are interested only in a subset that should be displayed in the query results and not all aliquots under a specimen. Using the 'Sequence' filter, limiting the number of aliquots displayed per parent specimen in the query results is possible.

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For example, a user wants to view 1 aliquot parent specimen. A filter can be applied in the query as "Specimen >> Specimen Statistics >> Sequence Equals 1"

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