1. Youden, W.J. and Steiner, E.H. (1975) Statistical Manual of the Association of Official Analytical Chemists. Association of Official Analytical Chemists Washington DC.
2. Ekins, R.P. (1976) General principles in hormone assay. In: Hormone Assays and their Clinical Application. IVth Edition. (eds. Loraine, J.A. and Bell, I. ) p 1–72, Churchill Livingstone, Edinburgh.
3. Ekins, R.P. (1983) The precision profile: its use in assay design, assessment and quality control. In: Immunoasays for Clinical Chemistry. (eds. Hunter, W.M. and Corrie, J.E.T. ) p 76–105, Churchill Livingstone, Edinburgh.
4. Rodbard, D. (1978) Statistical estimation of the minimal detectable concentration (`sensitivity’) for radioligand assays. Anal. Biochem. 90, 1–12.
5. Albano, J.D.M., Ekins, R.P., Maritz, G., Turner, R.C. (1972) A sensitive, precise radioimmunoassay of serum insulin relying on charcoal separation of bound and free hormone moieties. Acta. Endocrin. 70, 487–509.