In 2009, I sat down with Peter FitzGerald, the biochemist who founded Randox Laboratories. Then aged 59, FitzGerald had a brilliant capacity to be utterly unassuming and audaciously ambitious at the same time.   He explained his backstory, how he had set up the medical diagnostics firm in a henhouse at the back of his parents’ bungalow with the help of a stg£30,000 unsecured loan in 1982, and how he took great pride in the fact that Randox had remained true to its ‘‘country bumpkin roots’’. However, despite this, he had set a target of making the Co Antrim company…