GAST

Gastrin

EPIC Test Procedure Code: LAB3276

Performing Lab:
Referral Laboratory
Patient Preparation:

1. Fasting (8 hours) required 

2. For 12 hours before specimen collection, patient should not take multivitamins or dietary supplements (eg, hair, skin, and nail supplements) containing biotin (vitamin B7). 

3. For 1 week before specimen collection, if medically feasible, patient should not take proton pump inhibitors (omeprazole, lansoprazole, dexlansoprazole, esomeprazole, pantoprazole, and rabeprazole). 

4. For at least 2 weeks before specimen collection, patient should not take or receive drugs that interfere with gastrointestinal motility (eg, opioids).

Container Type:
Serum Gel (Preferred), Red Top
Specimen Type:

Serum

Preferred Volume:
1 mL
Minimum Volume:
0.5 mL
Specimen Processing:

1. If multiple specimens are collected, submit each vial under a separate order. 

2. Label specimens with corresponding collection time. 

3. Centrifuge at within 2 hours of collection. Refrigerated centrifugation is preferred but not required. Immediately aliquot serum into plastic vial.

Store and Transport:
Frozen immediately
Stability:

Refrigerated- 24 hours

Frozen (Preferred)- 30 days

Unacceptable Condition:

Gross Hemolysis: Reject

CPT Codes:

82941 - Gastrin (EAP 30020919)

Test Schedule:
Monday through Saturday
Turnaround Time:
2-4 days
Method:
Automated Chemiluminescent Immunometric Assay

Lab Personnel

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