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
Collection Procedure: Draw Fasting and in the morning for best results.
Specimen Processing: Separate serum or plasma from cells within one hour of collection by centrifugation. Aliquot serum or plasma into a separate tube if parent tube does not have a gel barrier. Store and transport refrigerated.
Unacceptable Conditions: Grossly Hemolyzed specimens

Limitations: 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)

Stability: