NEW YORK, NY--(Marketwire - July 31, 2008) - Daxor Corporation (AMEX: DXR), a medical instrumentation and biotechnology company, today announced second quarter earnings for 2008. For the quarter ended June 30, 2008, total operating revenues increased by 2.1 % to $556,587 from $545,318 in the same period in 2007. This was mainly the result of increased Volumex kit sales of $25,962 or 11.8% during the current quarter versus the same period in 2007. There were three Blood Volume Analyzers sold in both the quarter ended June 30, 2008 and June 30, 2007.