Qiagen reported that consolidated net sales for its second quarter 2010 increased 9% to $262.7 million from $240.2 million in the same quarter of 2009. Excluding the unfavorable impact from foreign currency exchange rates, net sales for the second quarter 2010 would have increased 11% from the second quarter 2009. Reported operating income for the quarter decreased 9% to $42.8 million from $46.9 million in the same quarter of 2009, and net income for the quarter increased 25% to $38.5 million from $30.9 million in the same quarter of 2009. Diluted earnings per share for the second quarter increased to $0.16 in 2010 (based on 241.6 million weighted average shares and share equivalents outstanding) from $0.15 in 2009 (based on 203.8 million weighted average shares and share equivalents outstanding).
Second quarter adjusted operating income increased 2% to $73.1 million in 2010 from $71.8 million in 2009, and second quarter 2010 adjusted net income increased 9% to $52.5 million from $48.3 million in 2009. Adjusted diluted earnings per share decreased to $0.22 in 2010 from $0.24 in 2009. These figures are adjusted for business integration, acquisition related and restructuring costs, a one-time tax benefit, purchased intangibles amortization and share based compensation.
For the six-month period ended June 30, 2010, net sales increased 14% to $527.1 million compared to $461.1 million in the respective period of 2009. Operating income as reported for the six months ended June 30, 2010 increased 4% to $87.5 million from $83.9 million for the same period in 2009. Net income increased 29% to $71.5 million from $55.6 million in 2009, and diluted earnings per share increased to $0.30 in 2010 from $0.27 in 2009.
On an adjusted basis, operating income for the six-month period ended June 30, 2010 increased 12% to $146.7 million in 2010 from $130.9 million in 2009, and adjusted net income increased 15% to $101.9 million from $88.5 million. Adjusted diluted earnings per share in the six months ended June 30, 2010 decreased to $0.42 per share from $0.44 per share in the same period of 2009.
Qiagen's second quarter and six-month period 2010 results include the results of operations from the company's recent acquisitions, the most significant of which were SABiosciences Corp., acquired in December 2009 and DxS Ltd., acquired in September 2009. Reconciliations of reported results determined in accordance with generally accepted accounting principles (GAAP) to adjusted results are included in the tables accompanying this release.