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Laboratory Medicine

Test catalogue


Test Name


Gold Tube Specimen Type / Requirements

Container Type = Gold (SST)

Minimum Volume = 1ml Serum

Tube must fill to at least ½ or greater of its vacuum capacity

Specimen Handling

Collection Instructions: Serum or plasma, free from hemolysis, collected with or without gel separator. Collect am specimen as close to 0800h as possible and pm specimen as close to 1600h as possible.

Laboratory Staff Instructions: Let sample clot adequately at room temperature before centrifugation. Separate serum or plasma from cells within 2 hours of collection.

Stability: Cortisol is stable at room temperature for 1 week, refrigerated for 1 week and frozen at -15 to -20°C for 3 months.

Transportation: Transport at room temperature ASAP. Place on ice if time of collection to time sample get to lab exceeds 2hrs

Sample Rejection Criteria: Avoid Hemolysis and/or Non sufficient Quantity (Not Sufficient Quantity)

Required Documentation

Turnaround Time (TAT)

1 hour for Trauma / Stat - 2 hours for routine

Test Utilization

Reference Value


AM: 193-690 nmol/L

PM: 83-303 nmol/L


AM: 190-740 nmol/L

PM: 30-300 nmol/L

Test Code



Competitive Immunoassay, Direct Chemiluminescence

Testing Location


Other Information

Last Updated: June 06, 2019