NFKK Reference Serum X
Purchase: DEKS
Certificate of analysis, version 6. Last
update 13/10-2009 (valid to 21/5-2011)
Evaluation spreadsheet for X (in english).
Last update 30/7-2007: New sheet with validation added.
Some conclusions (Rustad P. Test av riktighet med NFKK Reference serum X utført i danske, islandske og norske laboratorier. Klinisk Biokemi i Norden, nr. 2, vol. 17, 2005)
About X in Klinisk Kemi i Norden, no 4, 2003
Nordic
Trueness Project, Report to Participants and IMEP 17-1 Project