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 method, where this exists.
III -The legal representative of the external quality assessment body shall, at the request of the Director General of the Regional Health Agency, provide a statement of participation in the controls referred to in Article L. 6221-9 of a given medical laboratory, together with the results of these controls. The request may relate to tests carried out during the previous two years.
IV-The external quality assessment bodies and the Agence nationale de sécurité du médicament et des produits de santé shall keep, for the duration of their stability and for a maximum of two years, at least two copies of each of the samples used for quality controls.