What is the best Pcr inactivated Dna control or Nattrol for RealTime CT/NG assay of Chlamidia Trachomatis/Neisseria Gonorrhea Negative Control Pack (6 X 1.25 ml/vial)?

The NATtrol Clostridium difficile Positive Control from Ncbi publications delivered next week by Genprice is the best choice. The catalog number is MDZ040 and the price is 263 EUR.