Specimen Required

Patient Preparation: Patient should not be on any steroid, ACTH, gonadotropin, or estrogen medications, if possible, for at 48 hours prior to collection of specimen.

Collection Container/Tube:

Preferred: Red top

Acceptable: Serum gel

Submission Container/Tube: Plastic vial

Specimen Volume: 3 mL Serum

Collection Instructions:

1. Centrifuge as soon as possible and aliquot 3 mL serum into a plastic vial.

2. Freeze specimen immediately after separation.

3. Send frozen.