ISO15189:2012 supports the identification and control of non-conformities within the pre-analytical testing process. In addition, thought leaders from the European Federation of Clinical Chemistry, Laboratory Medicine (EFLM) Working Group, for Preanalytical Phase, recently published their expert opinion about management of internal quality control assessment for HIL indices.
Read the article in the Journal of Clinical Biochemistry for details.
You may wish to include a product such as Liquichek Serum Indices as part of your individualized Quality Control Program (IQC) to perform pre-analytical checks to monitor instrument performance to detect HIL samples.