Specimen Collection Manual and Test Catalog
FREE T4, DIRECT DIALYSIS
Geisinger Epic Procedure Code: LAB2311 Geisinger Epic ID: 44051SPECIMEN COLLECTION
Specimen type:
Serum
Preferred collection container:
Specimen required:
1 mL aliquot of serum; minimum 0.8 mL.
SPECIMEN PROCESSING
Processing instructions:
Allow to clot. Centrifuge and transfer serum specimens to clean, plastic, screw-capped vial(s). Transport on refrigerant coolant.
Transport temperature:
Refrigerated (preferred) or frozen.
Specimen stability:
Room Temperature: 4 days. Refrigerated: 14 days. Frozen: 35 days (-20°C).
Rejection criteria:
Stability limits exceeded.
TEST DETAILS
CPT code(s):
84439
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.
The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only.
Test includes:
Free T4 by Equilibrium Dialysis Including Total T4
Methodology:
Equilibrium Dialysis
Synonyms:
Review Date:
11/28/2024 Free T4 by Equilibrium Dialysis, Quest test code 35167, FT4
Performing Locations