Yeah Tim you are correct, the patent does refer to...

Yeah Tim you are correct, the patent does refer to diagnostics.

This is from the Southern Cross report re: Use of Metal Complexes:

" Ordinarily metals aren’t used in diagnostics
due to their tendency to chemically interact with the diagnostic reagents. In
the examples to this patent application Anteo’s scientists show that their
combinatorial chemistry methods can yield metal-bearing surfaces with good
binding properties that aren’t impacted by reagents. Example 6 in particular
shows a TNF assay where the surface binds anti-TNF antibodies using
chromium in the functional group. Assay sensitivity in this example was 70-
fold-better than immunoassays using conventional amide coupling"

So basically, metals aren't used in diagnostics because the current technology doesn't allow it. Then Anteo came along.