CORFQ – “Cortisol, Free and Total”

Update to specimen requirements, alternate specimen, rejection criteria, performed days, and turnaround time

Specimen Preparation: Centrifuge, separate serum from the cells, and send 2.0 mL of serum aliquoted into two screw capped plastic vials, with 1.0 mL in each vial.

Minimum Volume: 1.4 mL in two 0.7 mL aliquots

Alternate Specimen: Plasma: Lavender EDTA

Rejection Criteria: Serum separator tube (SST)

Performed Days: Sunday – Friday

Turnaround Time: 5 – 9 days