Specimen Requirements

Submit only 1 of the following specimens:

Plasma

Container/Tube: Green-top (heparin) gel tube.

Microcontainer with heparin and plasma gel separator is also acceptable.

Specimen Volume: 0.5 mL of heparinized plasma
Transport Temperature: Refrigerate
Collection Instructions: One mg dexamethasone (obtained from pharmacy) is given orally at 11 p.m. the night before the specimen will be drawn. Draw specimen at 4 p.m. the day after the dexamethasone was given. Forward promptly.

Note: 1. Indicate plasma.
2. Label specimen appropriately (plasma).

Serum
Container/Tube: Gold-top serum gel tube. 

Microcontainer with serum gel separator is also acceptable.

Specimen Volume: 0.5 mL of serum
Transport Temperature: Refrigerate
Collection Instructions: One mg dexamethasone (obtained from pharmacy) is given orally at 11 p.m. the night before the specimen will be drawn. Draw specimen at 4 p.m. the day after the dexamethasone was given. Forward promptly.

Note: 1. Indicate serum.
2. Label specimen appropriately (serum).