Oral Fluid Analysis Kit 

High resolution 2-dimensional (heart-cutting) GC is a powerful yet cost effective means of solving matrix interference problems in complex samples. Analytes are separated on a GC column and then cut to a second column of different polarity. The extremely high chromatographic resolution of 2-D GC, when coupled with a quadrupole MSD, provides sensitivity and selectivity comparable to GC/MS/MS. The confirmation of THC in oral fluids is a good example. The high level of matrix interferences in oral fluids prevents the successful measurement of THC down to the required 0.5 ng/mL level using conventional techniques. With 2-D GC, THC is well resolved from the interferences.