The most powerful instrument in a genetic counselor’s room is not a sequencer — it is a clear three-generation pedigree. A well-drawn family tree turns a tangle of relatives and diagnoses into a legible picture of risk, and it does more to orient a frightened patient than any lab printout.
Dedicated pedigree software is what makes that diagram reliable. It enforces standard nomenclature, captures the family history cleanly, and feeds validated risk models that translate the tree into a hereditary-cancer probability. The output is both a teaching aid for the patient and a defensible basis for the next clinical step.
Software is only half the toolkit. Physical inheritance models — the tabletop aids that make a 50 percent autosomal-dominant transmission risk tangible — reach patients in a way a probability on a screen cannot. Under stress, a model a patient can hold communicates inheritance more effectively than any number.
Together, the digital and physical tools turn an abstract panel result into something a patient can understand and act on. We review the specific software and teaching models worth stocking in the full genetic counseling toolkit, alongside the collection hardware patients will meet on their way through the workflow.