Specimen Requirements

Submit only 1 of the following specimens:

Plasma

Draw blood in a green-top (lithium heparin) tube. Spin down and send 4 mL (pediatric: 2 mL) of lithium heparin plasma. Avoid hemolysis or lipemia.

Note: 1. Indicate plasma on request form.

2. Label specimen appropriately (plasma).

Serum

Draw blood in a plain, red-top tube or a serum gel tube. Spin down and send 4 mL (pediatric: 2 mL) of serum. Avoid hemolysis or lipemia.

Note: 1. Indicate serum on request form.

2. Label specimen appropriately (serum).

Do not refrigerate or freeze.  LDH is stable 3 days at room temperature (20-25°C)