Specimen Requirements

Container Type: Lithium Heparin (Green Top) or Serum Separator (Gold Top)
Specimen Type: Plasma or Serum
Preferred Volume: 1 mL
Emergency Minimum Volume: 0.3 mL
Specimen Processing: Separate serum or plasma from cells as soon as possible by centrifugation. Store and transport refrigerated. One freeze/thaw acceptable.

Limitations: Order this test only once per year, for Medicare allowed screening, along with screening PSA diagnosis code V76.44. Samples should not be taken from patients receiving therapy with high biotin doses (i.e. >5 mg/day) until at least 8 hours following the last biotin administration.
Alternate Specimens: Plain Serum Tube (Red Top), EDTA Plasma (Lavender Top). The same sample type should be used for each draw in series tests.

Stability: