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Test Code Cortisol Cortisol, Plasma

Performing Laboratory

NRL-Chemistry

Methodology

Immunoenzymatic Assay

Specimen Requirements

Specimen Type: Plasma

Container/Tube: Mint-green top (lithium heparin)

Specimen Volume: 1 mL

Collection Instructions:

1. Morning (8 a.m.) and afternoon (4 p.m.) specimens are desirable.

2. Indicate time of draw.

Reference Values

A.M.

>5 years: 7.0-25.0 µg/dL


P.M.

>5 years: 2.0-14.0 µg/dL

Note: Cortisol is released in a cyclic fashion, typically resulting in a diurnal peak (6-8 a.m.) and nadir (11 p.m.).

Day(s) Test Set Up

Monday through Sunday

Turnaround Time:

STAT-1 hour

Routine-shift

Specimen Transport Temperature

Refrigerate

Test Classification and CPT Coding

82533-each