Portal de Periódicos da CAPES

Comparison of a TLC Method with EMIT® and GC/MS for Detection of Cannabinoids in Urine*

1990; Oxford University Press; Volume: 14; Issue: 6 Linguagem: Inglês

10.1093/jat/14.6.375

1945-2403

Rodger L. Foltz, Irving Sunshine,

Mass Spectrometry Techniques and Applications

Urine specimens were analyzed in parallel with a new TLC method, an EMIT® assay, and a reference GC/MS method. At a 9-carboxy-THC cutoff of 20 ng/mL, the TLC method correctly identified 92% of the positive urines and 97% of the negative urines. In contrast, only 63% of the urine specimens shown by GC/MS to contain greater than 20 ng/mL of 9-carboxy-THC were identified as positive by the EMIT d.a.u. assay at the 100-ng/mL cannabinoid cutoff.