Gastrin | KK Women's and Children's Hospital

Specimen Container	Gel separator tube (Adult)
Specimen Requirement	Plain Blood 3 mL
Specimen Storage/Transport	Centrifuge at refrigerated temperature within 2 hours of collection and immediately aliquot serum into plastic vial.
Orderable as Urgent?	No
Turn Around Time	1 - 3 days
Testing Laboratory Location	Mayo Clinic Laboratories in Rochester
Laboratory	Clinical Chemistry
Contact Number	6394 1352
Day and Time Performed	Monday through Saturday
Orderable on CPOE?	No
Downtime Form	Clinical Chemistry - Form A
Additional Information	1) For 12 hours before specimen collection, do not take multivitamins or dietary supplements containing biotin (vitamin B7), which is commonly found in hair, skin, and nail supplements and multivitamins. 2. If medically feasible, proton pump inhibitor (omeprazole, lansoprazole, dexlansoprazole, esomeprazole, pantoprazole, and rabeprazole) therapy should be discontinued 1 week before measurement of serum gastrin levels. 3. Drugs that interfere with gastrointestinal motility (eg, opioids) should be discontinued for at least 2 weeks before serum gastrin testing.

Change History Notes

08 Feb 2023 12:00 AM

Updated Specimen Container, non-orderable on CPOE.
03 Aug 2021 12:00 AM

Updated Specimen Requirement, Specimen Storage / Transport, TAT, Day and Time Performed, Additional Information.

Last Updated - 27 May 2025