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Quality control and validation data from the valerian extract study ensure reliability of the analytical methods used to measure GABA and serotonin receptor activity. Standardization of the extract preparation is documented alongside biological assay performance.

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![Figure 169: Quality control and validation data from the valerian extract study ensure reliability of the analytical methods used to measure GABA and serotonin receptor activity. Standardization of the extract preparation is documented alongside biological assay performance.]()

> Source: Kazim Sahin et al. "Impact of a Novel Valerian Extract on Sleep Quality, Relaxation, and GABA/Seroto." *Antioxidants (Basel, Switzerland)*, 2024. PMID: [38929096](https://pubmed.ncbi.nlm.nih.gov/38929096/)
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  <img src="" alt="Quality control and validation data from the valerian extract study ensure reliability of the analytical methods used to measure GABA and serotonin receptor activity. Standardization of the extract preparation is documented alongside biological assay performance." />
  <figcaption>Figure 169. Quality control and validation data from the valerian extract study ensure reliability of the analytical methods used to measure GABA and serotonin receptor activity. Standardization of the extract preparation is documented alongside biological assay performance.<br>  Source: Kazim Sahin et al. "Impact of a Novel Valerian Extract on Sleep Quality, Relaxation, and GABA/Seroto." <em>Antioxidants (Basel, Switzerland)</em>, 2024. PMID: <a href="https://pubmed.ncbi.nlm.nih.gov/38929096/">38929096</a></figcaption>
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