Greetings,
I have a quick query regarding handling assay results which are below the
assay's limit of detection. For statistical purposes a value must be
assigned to such samples. Does anyone have any suggestions on which is the
most appropriate value to use. Those I most commonly see used are either
the limit of detection itself, or 50 percent of the limit of detection
(presumably assuming that of all such samples half will have a 'true' value
between zero and 50 % LOD, and the other half between 50-100% of the LOD)
Suggestions and comments all welcome.
Thanks,
RMD
Richard M Dixon BVMS CertVR MRCVS
University of Glasgow, Dept Vet Clinical Studies,
Bearsden Road, Glasgow G61 1QH, Scotland.
Tel ++ (0)141 330 5730 Fax ++ (0)141 330 6996
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