Geisinger Medical Laboratories Test Catalog

Order Display Name: Geisinger Epic Procedure Code Or ID CPT Code:  


Geisinger Epic Procedure Code: LAB3071             Geisinger Epic ID: 39173

Specimen type:
Serum (preferred) or plasma
Preferred collection container:
Alternate Collection Container:
4 mL green/green-top (sodium heparin) tube
3.5 mL gold-top (serum separator) tube
3 mL lavender-top (K2 EDTA) tube
3 mL green/black top lithium heparin tube
Specimen required:
1 mL aliquot of serum or plasma; minimum 0.5 mL.

Specimen processing instructions:
Centrifuge and transfer serum or plasma specimens to clean, plastic, screw-capped vial(s). Transport on refrigerant coolant. Sample is acceptable up to 3 freeze/thaw cycles. 
Transport temperature:
Refrigerated or frozen. Transport on refrigerant coolant. Sample is acceptable up to 3 freeze/thaw cycles.
Specimen stability:
Refrigerated: 7 days. Frozen: 60 days(-20°C).
Rejection criteria:
Hemolyzed specimen. Room temperature specimen.

Reference interval:
Altitude-Related Reference Ranges for Soluble Transferrin Receptor, Serum
African American 10.6-29.9 mmol living at low altitude, 12.5-31.8 mmol living at high altitude.
Non-African American 8.8-28.1 mmol living at low altitude, 0.7-30 living at high altitude
Clinical cutoff values (2)
Iron deficiency anemia - Greater than ULRR (even during acute response to infection/inflammation).
Hyperplastic Erythropoiesis: Greater than ULRR
Ineffective Erythropoiesis: Greater than ULRR (e.g., thalassemia, megaloblastic or sideroblastic anemia)
Effective increased: Greater than ULRR.
Erythropoiesis (e.g., hemolytic anemia with an elevated reticulocyte count; recent blood donation; recent blood loss; last trimester of pregnancy) ULRR=Upper Limit of Reference Range for specific population (e.g., 29.9 nmol/L for African-Americans living <1000 feet above sea level).
(1) Clinical Chemistry 1998; 44:35-39.
(2) Reviews available in Clin Chem Lab Med 1999; 37:1-10 and Blood 1997; 89:1052-7.
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:
Soluble transferrin receptor.
Quest test code 91031

Performing Locations

Quest Diagnostics

Technical Lead: Michael Weaver    
Frequency: Monday-Friday morning    
Performed STAT? No
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