Discovery stage pharmacokinetics using dried blood spots

Area of Science:

• Pharmacology and Toxicology
• Analytical Chemistry
• Biotechnology

Background:

• Early drug discovery relies on time-dependent measurements of drug candidates in biological fluids for lead optimization.
• Liquid chromatography-tandem mass spectrometry (LC-MS) is the primary detection method.
• Sample collection and preparation are critical but often overlooked steps.

Purpose of the Study:

• To describe a novel method for early-stage pharmacokinetic analysis using dried blood spots.
• To evaluate the robustness, reliability, and reproducibility of this method for drug candidate screening.

Main Methods:

• Utilized whole blood collected on filter paper, dried to form blood spots.
• Applied dried blood spot technique, commonly used in neonatal screening, to drug discovery.
• Performed pharmacokinetic analysis on samples collected via dried blood spots.

Main Results:

• The dried blood spot method proved to be a robust and reliable technique for discovery stage pharmacokinetic analysis.
• This approach offers a reproducible alternative to traditional plasma-based sample processing.
• Simplifies sample collection and preparation compared to conventional methods.

Conclusions:

• Dried blood spots are a viable and effective tool for early drug candidate screening and pharmacokinetic profiling.
• This method streamlines the sample handling process, facilitating faster decision-making in lead optimization.
• The application of dried blood spots enhances the efficiency and reproducibility of early drug discovery workflows.