Mine took a week. Each time.
Best wishes :)
It's not unusual for delays in pathology reports... many times, it depends on the lab workload. Anyway, maybe the facility or surgeon that performed the biopsy has a close affiliation with the Mayo Clinic and that's why they're forwarding the sample to them.
In certain cases, this approach may be a routine procedure for your caregivers... but, this doesn't necessarily imply the presence of Cancer.
If I were you, I would calm down and not read too much into the process. Good luck.