Specimen Requirements

Preferred Collection Container: green top lithium heparin tube, SST 

Also Acceptable Collection Container: serum red top tube or EDTA purple top tube @ Allen

Collection Information:

Patient should be fasting for 12-14 hours.

Collect 2.0 mL of Lithium heparinized plasma or serum.

Serum or plasma must be separated from cells within 2 hours of collection.