Related Experiment Video
Updated: Aug 10, 2026

12:09
The Use of Fluorescent Target Arrays for Assessment of T Cell Responses In vivo
Published on: June 19, 2014
[THC-carbonic acid determination in serum with fluorescence polarization immunoassay (FPIA, TDX) and GCMS]
Abstract:
The Urine-Immuno-Assay (Abbot, TDX) for Cannabis you may also use for the investigation of blood or serum. First the protein is precipitated by Metanol. The solvent is removed by a gentle stream of nitrogen and the solution reconstituted with Phosphat-Buffer. You may handle this solution like urine. Confirmation analysis is made by GCMS after extraction using C-18-extraction tubes and derivation with a proper reagent. Detection limit is about 10 ng/ml. You need only 0.3 ml Serum.

