>>> Roger Ekins <[log in to unmask]> 11/09/2009 16:34 >>>
<<<snip>>>
But whatever Trainer et al set out to achieve three years ago. it is clear that the use of the 22-kDA hGH isoform has so far had a negligible effect on the variability of hGH immunoassays, as recently reported by Arafat et al and Baumann GP.
<<<snip>>>
It is hardly surprising that Arafat et als paper did not show a change - because they used assays that are calibrated against two different standards (neither of which was IS 98/574) and one has not been available since 2005 when Quest closed Nichols down.
Julian Barth
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