Test Method
This method is adapted from that developed by Chomczynski and Sacchi and uses TRIZOL-LS reagent for the isolation of RNA from biological samples. WBC or tissue are homogenised in TRIZOL-LS, a monophasic solution of phenol and guanidine isothiocyanate. Addition of chloroform and centrifugation separates the organic and aqueous phases, and the RNA is recovered from the aqueous phase by isopropanol precipitation.