| Methodology: |
Quantitative Radioimmunoassay
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| Performed: |
Varies
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| Reported: |
7-13 days
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| Specimen Required: |
Patient Prep: Patient should be fasting for 10-12 hours prior to collection of specimen. Medications affecting intestinal motility or insulin levels should be discontinued, if possible 48 hours prior to collection.
Collect: GI preservative tube (ARUP supply #47531). Available online through eSupply using ARUP Connect™ or contact ARUP Client Services at (800) 522-2787. Tubes for this test are provided at a cost of $30 each.
Specimen Preparation: Separate plasma from cells within 10 minutes. Transfer 3 mL plasma to an ARUP Standard Transport Tube and freeze immediately. (Min: 1 mL)
Storage/Transport Temperature: CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered.
Unacceptable Conditions: Specimens not collected in a GI preservative tube.
Stability (collection to initiation of testing): Ambient: Unacceptable; Refrigerated: Unacceptable; Frozen: 6 months
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