Specimen Required

Patient Preparation:

1. Fasting: 10 to 12 hours

2. Patient should not be on any medications that affect insulin secretion or intestinal motility, if possible, for at least 48 hours prior to collection.

Supplies: GI Preservative (T125)

Collection Container/Tube:

Preferred: Lavender top (EDTA)

Acceptable: GI preservative tube

Submission Container/Tube: Plastic vial

Specimen Volume: 3 mL plasma

Collection Instructions:

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

2. Freeze plasma immediately after separation

3. Send frozen.