I recommend the use of the Clinical Labotatory Standards Institute (CLSI) guidelines for quantitaive methods http://shop.clsi.org/method-evaluation-documents/ (note: this link includes all MV guidelines, including those where the output is nominal). Westgard's book "Basic method validation" is recommended and cheaper than the CLSI docs. Westgard QC site has a lot of valuable free text www.westgard.com. Attached is a 2 pages PDF with the golden scheme/table for my MV (quantitative tests).

I have measured salivary cortisol by  EIA kit; you can check this link 

http://www.arborassays.com/documentation/inserts/K003-H.pdf

Thank you so much, if you have more data about other methods, it will be a wonderful gift.

I recommend the use of the Clinical Labotatory Standards Institute (CLSI) guidelines for quantitaive methods http://shop.clsi.org/method-evaluation-documents/ (note: this link includes all MV guidelines, including those where the output is nominal). Westgard's book "Basic method validation" is recommended and cheaper than the CLSI docs. Westgard QC site has a lot of valuable free text www.westgard.com. Attached is a 2 pages PDF with the golden scheme/table for my MV (quantitative tests).

Its all right Paulo. Thank you very much

There is a great paper investigating this by Miller et al (2013) "Comparison of salivary cortisol as measured by different immunoassays and tandem mass spectrometry" in Pyschoneuroendocrinology 38: 50-57.  A very good article.  Salimetrics assays come out very well.  If you want a Point of Care test for cortisol check our website (www.iprointeractive.com).

I HAVE learnt this paper, its very interesting. But i research  especially that present effect of antibody types prepared during immunization on their selectivity and the consequences on the diagnosis

dear paulo ,

 I support your view

 Cheers

 jerard