1 - Program Overview

Assessment of accuracy – quantitative methods.

Participating labs can choose to be assessed for all the analytes of this program, or simply a subset of analytes of interest.

2 - Assessment Frequency

Number of surveys per year: 4
Number of control samples per survey: 2
Number of samples per year: 8

3 - List of Analytes Assessed 

• AFP
• Estriol
• hCG total
• hCG, Free β chain
• PAPP-A
• Risk calculation

4 - Description of the Control Samples

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

5 - Demographic Data

Each sample is accompanied by demographic data to support the calculation of fetal Trisomy 21 risk.