Specimens may be
stored on or off the clot, red blood cells, or separator gel for up to 3 days
at room temperature (study performed at 23 to 30°C) or up to 7 days at 2-8°C.
If testing will be delayed more than 3 days for specimens stored at room
temperature or more than 7 days for specimens stored at 2-8°C, remove serum or
plasma from the clot, red blood cells, or separator gel and store at -20°C or
colder. Avoid more than three freeze/thaw cycles.