6:53AM China Medical Tech receives SFDA approval for its PCR-based KRAS Assay for colorectal cancer targeted drug (CMED) 4.93 : Co announced that China's State Food and Drug Administration has approved the Company's real-time PCR-based V-Ki-ras2 Kirsten rat sarcoma viral oncogene homolog assay as a companion diagnostic test for the use of a targeted drug for the treatment of colorectal cancer patients.