Geisinger Medical Laboratories/Geisinger Proven Diagnostics Test Catalog

Test Name: Sunquest Test Code Epic Procedure Code Or ID CPT Code:  


Sunquest Test Code:
SEROT      Geisinger Epic Procedure Code: 84260         Geisinger Epic ID: 6986

Specimen type:
Whole blood
Preferred collection container:
Specimen required:
4 mL EDTA whole blood in ascorbic acid container; minimum 1 mL.
Special notes:
Minimum draw one 4 mL EDTA tube provided with kit. Transfer immediately to the plastic bottle containing 35 mg ascorbic acid (also provided with kit). Mix and freeze. Send frozen.
Patient preparation:
Patient should avoid foods high in indoles: avocado, banana, tomato, plum, walnut, pineapple, and eggplant. Patient should also avoid tobacco, tea, and coffee for three (3) days before collection.

Specimen processing instructions:
Do not centrifuge. Do not aliquot. 
Transport temperature:
Specimen stability:
Room Temperature: Unacceptable. Refrigerated: Unacceptable. Frozen: 6 Weeks
Rejection criteria:
Specimen not shipped frozen.

Reference interval:
56-244 ng/mL.
CPT code(s):
Note: The billing party has sole responsibility for CPT coding.  Any questions regarding coding should be directed to the payer being billed.  The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only.
Test includes:
High Performance Liquid Chromatography (HPLC)
Quest test code 902097
Clinical significance:
Serotonin is produced in excess by carcinoid tumors of the enterochromaffin cell usually in the small intestine, appendix or rectum.

Performing Locations

Quest Diagnostics

Technical Lead: Michael Weaver    
Frequency: Monday, Wednesday, Friday morning    
Performed stat? No

Geisinger South Wilkes-Barre

Technical specialist: Bernadette Johnson    
Frequency: Daily, all shifts    
Performed stat? Yes
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