Article D6221-20 of the French Public Health Code
I.-Medical biology laboratories shall submit each analytical system they use to an external quality assessment. II.-Each external quality assessment body for medical biology examinations mentioned in Article L. 6221-9 carries out an inter-laboratory comparison of the results obtained and a comparison of results between groups of laboratories using the same techniques. The body also periodically compares the results of each medical biology laboratory with the result obtained by the reference…