Cortisol, Serum Free with CBG

Specimen:

Test Code

CRTSF

Specimen Name

Cortisol, Serum Free with CBG

Collect

1-SST

Submit

1 mL (Min: 0.5 mL) Serum

Special Handling

Separate serum within one hour of venipuncture. Transfer specimen to a plastic transport tube before freezing. To avoid delays in turnaround time when requesting multiple tests on frozen samples, please submit separate frozen specimens for each test requested.

Rejection Criteria

Stability

CRITICAL FROZEN

Methodology

HPLC/Tandem Mass Spectrometry; Radioimmunoassay (RIA); calculation of free cortisol

Performed

Reported

6-12 days

CPT Codes

  • 82533
  • 84449

Components

Cortisol, total; cortisol-binding globulin (CBG); free cortisol; percent free cortisol

Additional Information

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Test Information

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Common Lab Definitions

  • Serum 
  • Plasma 
  • STT