All regions contributed to the solid growth in the third quarter of 2012. The Asia-Pacific / Japan region (19% of net sales, +14% CER) delivered double-digit CER sales growth in the Molecular Diagnostics, Applied Testing and Pharma customer classes. In the Americas (47% of net sales, +11% CER), higher sales of the QuantiFERON latent TB test and Personalized Healthcare products were among the drivers. The Europe / Middle East / Africa region (33% of net sales, +7% CER) advanced on growth contributions from many northern European countries as well as Russia and Turkey.
In the third quarter of 2012, consumables and related revenues (87% of net sales, +10% CER) were higher in all customer classes, particularly Molecular Diagnostics and Applied Testing. For the first nine months of 2012, consumables and related revenues represented 87% of net sales and grew 12% CER compared to the same period in 2011.Instrument sales (13% of net sales, +4% CER) in the third quarter of 2012 were driven by initiatives to expand new placements of the QIAsymphony automation platform and its Rotor-Gene Q real-time PCR system. The majority of placements were achieved among Molecular Diagnostics customers, and primarily through reagent rental agreements where revenues are recognized over a multi-year period. Demand was also strong among Applied Testing customers following the launch of new QIAsymphony protocols for these applications in early 2012. For the first nine months of 2012, instrument sales rose 13% CER from the same period in 2011 and represented 13% of net sales. Customer classes An overview of performance in QIAGEN's four customer classes (based on total sales results including organic growth and acquisitions at CER):