Research Article
A Simple Ultraperformance Liquid Chromatography-Tandem Mass Spectrometry Method for Measurement of Cortisol Level in Human Saliva
Figure 2
Total ion current and multiple reaction monitoring chromatograms of cortisol and the internal standard (IS) tolperisone in human saliva.
| (a) Cortisol (80 NG/ML) |
| (b) IS (20 NG/ML) |
| (c) Mixture of (a) & (b) |