Cell lineage

Why does it insist on asking where a vial came from?

Origin is required because it is the one part of a vial’s history nobody can reconstruct later. A position can be checked against the dewar and a barcode against the label, but no test on a frozen vial identifies the exact parent vial.

1. Choose Another vial when these cells were frozen down from a vial already recorded in CryoIndex. The parent picker searches current and removed records.
2. Choose New to the lab for purchased stock, a gift from another lab, or a primary isolation. Use Source to record where it came from when that information is known.
3. Choose Not recorded only when the lab genuinely does not know the answer. CryoIndex keeps that uncertainty explicit instead of guessing.
4. If the parent was differentiated, transduced, immortalised, or subcloned into a different line, choose the parent and select Differentiated or modified into a different line.
5. For one-vial storage, answer Origin again after every save. In batch storage, one answer applies to the whole batch.