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VASOACTIVE INTESTINAL POLYPEPTIDE
Number 973
CPT Code 84586
Alias
Specimen Container Lavender Top
Specimen Type Plasma EDTA with Trasylol
Turn Around Time
Days Performed
Reference Range 0.0-58.8 pg/mL
Alternate Specimen
Volume 2 mL Plasma
Stability Ambient N/A
Stability Refrigerated N/A
Stability Frozen Preferred
Patient Preparation
Patient must not have received radioactive substances 24 hours prior to test. Patient should receive at least 300 grams of carbohydrate daily for three days before fasting 12 hours.
Methodology
Radioimmunoassay (RIA)
Limitations
Not all patients with the syndrome have increased VIP. Increased VIP can be found in healthy controls and in laxative abusers
Rejection Criteria
Sample not collected with Trasylol®; sample not submitted in tube with Trasylol label, gross hemolysis; recently administered radioisotopes; specimen not received frozen; serum, sodium citrate, or heparinized plasma specimen; lipemia
Additional Instructions
Performing Laboratory Reference Laboratory
TagsVIP, PANCREATIC