Specimen Collection Requirements
Serum or Plasma, one 5.0 mL gold (SST) or 3.0 mL mint green (lithium heparin, PST) top tube
Allow serum to completely clot at room temperature (minimum: 30 minutes). Centrifuge and separate serum or plasma from cells ASAP. Avoid contamination with environmental iron. Use only Iron-free collection tubes, pipets and test tubes.
AFTER SEPARATION FROM CELLS: Ambient (20-25°C): 24 hours; Refrigerated (2-8°C): 7 days; Frozen (at or below -20°C): 1 month
Samaritan Health Services Laboratories
Male: 59-158 mcg/dL
Female: 37-145 mcg/dL
Thursday, January 5, 2017 03:42:17 AM