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Test Code LAB4062 CORTISOL, RANDOM

Important Note

Cortisol drawn after 1000 is considered random. Please order a Cortisol AM (Test code: LAB4063) for samples collected  between 0400-1000. If Cortisol PM is requested, the sample should be collected at 4pm.

Specimen Type

Preferred Sample: Lithium Heparin Tube (Mint Green Top)
Alternative Sample: Serum (SST, Gold, Tiger, Red Top Tube-no gel)

Collection Instructions

Draw specimen after 10:00 am and before 4 am.

Specimen Volume

1 mL

Minimum Volume

0.5 mL

Turnaround Time

STAT: 1 hour
Routine: 4 hours

Test Schedule

Daily

Sample Stability

Refrigerated: 14 days
Frozen: 30 days

Specimen Processing

Spin tube for 10 muntues. Store tubes in refrigerator until testing can be done.

Method

Immunoassay

Reference Ranges

Cortisol, Random 2.9-17.3 ug/dL

The reference ranges for Cortisol are dependent on the time of draw.

Cortisol AM 3.7-19.4 ug/dL.

Critical Values: None

Reporting Limit

Measuring Range: 1.0 - 59.8 ug/dL

Reporting Range: 1.0 -119.6 ug/dL (1:2 dilution)

Interference

Hemolysis: 500mg/dL

Icterus: 20 mg/dL

Lipemia: 2000mg/dL

Synonyms

Corran, Corticosteroid, LAB4062

CPT Codes

82533