Submit only 1 of the following specimens: Preferred: Plasma Draw blood in a green-top (lithium heparin) tube(s). Spin down and send 2.5 mL of lithium heparin plasma refrigerated. Avoid hemolysis and exposure of specimen to atmosphere. Note: 1. Indicate plasma on request form. 2. Label specimen appropriately (plasma).
Alternate: Serum Draw blood in a serum gel tube(s). Spin down and send 2.5 mL of serum refrigerated. Avoid hemolysis and exposure of specimen to atmosphere. Note: 1. Indicate serum on request form. 2. Label specimen appropriately (serum).
