Serum: Collect sample in Red top tube
Plasma: Collect sample in Green top tube (Sodium Heparin)
Promptly centrifuge with refrigeration and separate Serum or Plasma into chilled plastic screw capped vial using approved guidelines. Freeze immediately and ship with dry ice.
Ascorbic acid at very high concentration (exceeding 51 mcmol/mL plasma) can interfere. It is recommended that patients refrain from taking excessive amounts of vitamin C or vitamin C rich food for at least 48 hours prior to collection.
Plastic container (preservative-free)
Received Room Temperature. Gray top tube (Sodium Fluoride / Potassium Oxalate). Polymer gel separation tube (SST or PST).
Rejection criteria pertain to clinical sample submissions only.
Room Temperature: Not Stable
Refrigerated: 14 day(s)
Frozen (-20 °C): 30 day(s)