Medical diagnostics firm Omega Diagnostics is at its best levels since last October as acquisitions helped turnover jump 56% and profits more than double.The firm, which tests for specific infectious and autoimmune diseases, posted a pre-tax profit of £266,893 for the year ended 31 March 2009, up from £123,708 in 2008, on turnover of £5.4m. This year's numbers include a full 12 months contribution from Genesis and Cambridge Nutritional Sciences (CNS) versus just seven months the year before.But there's also been 20% growth in underlying like-for-like turnover, in line with market expectations.Chairman David Evans expects further growth through the rest of the year, both organically and through acquisitions, after matching forecasts in the first three months."A number of high quality value enhancing opportunities are currently being evaluated," Evans said.