Awhile ago I posted a blog about an article by the American Association of Clinical Chemists on harmonizing TSH testing.
The body doing the work is the International Federation of Clinical Chemists and the committee on Standardizing Thyroid Function Tests is headed by Prof. Dr. Linda Thienpont. Diogenes mentioned her in his last epistle to the Scottish Thyroid Petition Committee. The following links are to their first reports from 2009/2010 for those who have an interest. PR
The links can take awhile before they come up.