Top 4 Small-Cap Stocks In The Diagnostic Substances Industry With The Highest ROA By: Benzinga via Benzinga May 05, 2015 at 04:51 AM EDT Below are the top small-cap diagnostic substances stocks on the NYSE and the NASDAQ in terms of return on assets. The ... Read More >> Related Stocks: Amag Pharmaceuticals Meridian Bioscience Neogen Corp Surmodics Inc