|EQA 2023 - Catecholamines and Urinary Derivatives (CATU)|
Expert Biologists - Scheme Coordinators:
Estelle BUGNI and Laurence CHARDON/span>
EQA performed since 1983
Number of participating laboratories in 2022: 44
1 - Scheme Overview
This EQA scheme is intended for laboratories carrying out the determination of catecholamines, methoxylated derivatives, VMA, HVA and 5HIAA in urine.
Participating labs can choose to be assessed for all the analytes of this scheme, or simply a subset of analytes of interest.
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
4 - Description of the Control Samples
Lyophilized human control urine (samples to be resuspended in 5 mL of distilled water + 40 μL of 6M HCl),