1 - Scheme Overview

This EQA scheme is intended for laboratories carrying out the determination of urinary free cortisol.

2 - Assessment Frequency

Number of surveys per year: 6
Number of control samples per survey: 2
Number of samples per year: 12

3 - List of Analytes Assessed 

• Free cortisol
• Creatinine

4 - Description of the Control Samples

Lyophilized human control urine (samples to be resuspended in 3 mL of distilled water).