Long-Term Stability of Hydromorphone in Human Plasma Frozen at −20°C for Three Years Quantified by LC-MS/MS

<div>Chromatogram of a control sample (blank plasma plus standard plus internal standard) with a concentration of 2.5 ng/mL. The internal standard hydromorphone-D3 is presented in the upper panel and hydromorphone in the lower panel, respectively.</div>

International Journal of Analytical Chemistry

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Figure 2

Figure 2: Long-Term Stability of Hydromorphone in Human Plasma Frozen at −20°C for Three Years Quantified by LC-MS/MS 