1 - Program Overview

This external quality assessment program assesses the accuracy of the assay of one of the markers used in the monitoring of osteoporosis: C-terminal telopeptide (CTX).

This program is not compatible with the IDS ELISA method.

2 - Assessment Frequency

Number of surveys per year: 4
Number of control samples per survey: 1 or 2
Number of samples per year: 6

3 - List of Analytes Assessed 

• CTX (C-terminal telopeptide)

4 - Description of the Control Samples

Lyophilized human control serums (samples to be resuspended in 1 or 2 mL of distilled water).