Cortisol, Free, Total With CBG (Endocrine Sciences)

CPT: 82533; 84449
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Test Includes

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

Expected Turnaround Time

6 - 12 days

Specimen Requirements


Serum, frozen


1 mL

Minimum Volume

0.3 mL


Red-top tube or gel-barrier tube


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.

Storage Instructions

Freeze. Stable at room temperature for one day or refrigerated for one day. Stable for one year frozen.

Test Details


HPLC/tandem mass spectrometry; radioimmunoassay (RIA); calculation of free cortisol


Order Code Order Code Name Order Loinc Result Code Result Code Name UofM Result LOINC
500440 CBG with Free Cortisol 68315-1 500131 Cort.Bind.Glob.(CBG) mg/dL 3033-8
500440 CBG with Free Cortisol 68315-1 500155 Cortisol, Serum LCMS ug/dL 2143-6
500440 CBG with Free Cortisol 68315-1 500441 Free Cortisol, Serum ug/dL 2145-1
500440 CBG with Free Cortisol 68315-1 500442 Percent Free Cortisol, Serum % 65364-2

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