Specimen Collection Manual and Test Catalog
CORTISOL, FREE, LC/MS, SERUM
Geisinger Epic Procedure Code: LAB1109 Geisinger Epic ID: 52361SPECIMEN COLLECTION
Specimen type:
Serum (preferred) or plasma
Preferred collection container:
Alternate collection container:
3 mL lavender-top (K2 EDTA) tube
Specimen required:
2 mL serum; minimum 0.7 mL
Special notes:
Do not collect in tube containing gel.
SPECIMEN PROCESSING
Processing instructions:
Centrifuge and aliquot.
Transport temperature:
Refrigerated (cold packs).
Specimen stability:
Room temperature: 48 hours. Refrigerated: 7 days. Frozen: 2 years.
Rejection criteria:
Gross hemolysis • Serum Separator Tube (SST®)
TEST DETAILS
CPT code(s):
82530
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.
Methodology:
Chromatography/Mass Spectrometry
Synonyms:
Quest test code 36423, Free CortSer
Clinical significance:
Review Date:
12/09/2024 Free cortisol is useful in the detection of patients with Cushing's syndrome for whom free cortisol concentrations are elevated.
Performing Locations