Independent proficiency tests are an important tool for laboratories to show evidence of their performance and to ensure that their analytical results can be trusted. The IAEA provides substantial ...

When you bring a measurement instrument to a calibration lab, you assume that your instrument will come back within expected tolerances. But, how do you know? That's where laboratory proficiency tests ...

Testing for inborn errors of metabolism is performed by clinical laboratories worldwide, each utilizing laboratory-developed procedures. We sought to summarize performance in the College of American ...