What Is Toxicokinetics Integrated with Repeated-Dose Toxicology?

Toxicokinetics Integrated with Repeated-Dose Toxicology studies are important safety investigations aimed at evaluating the systemic exposure of the test substance in the organism during repeated-dose toxicity studies. This approach enables a more comprehensive and scientific risk assessment by allowing for the joint interpretation of toxicological findings and biological exposure data.

Toxicokinetic data obtained during repeated-dose toxicity studies help correlate observed toxic effects with exposure levels and play a critical role in determining safe exposure limits.

At NanoTox, we offer integrated toxicokinetic assessment services for repeated-dose toxicity studies, supported by our infrastructure compliant with GLP principles and our team of experts.

The Purpose of Integrating Toxicokinetics and Toxicology

The primary objective of these studies is to establish the relationship between systemic exposure to the test substance and the resulting toxicological effects.

Through these studies:

• Systemic exposure levels are determined,
• The dose-response relationship for toxic effects is evaluated,
• Target organ exposures are assessed,
• Safety margins are established,
• Regulatory requirements are met.

The data obtained contribute to grounding human health risk assessments on a scientific foundation.

What Is Toxicokinetics?

Toxicokinetics refers to the evaluation, from a toxicological perspective, of the processes of absorption, distribution, metabolism, and elimination of a substance within an organism.

Essentially, the following processes are examined:

• Absorption
• Distribution
• Metabolism
• Elimination (Excretion)

These processes provide important information for understanding the extent to which the test substance reaches target organs and its potential toxic effects.

Integration with Repeated-Dose Toxicity Studies

During repeated-dose toxicity studies, biological samples are collected at specific time points to determine systemic exposure levels.

This approach allows for:

• Evaluation of the relationship between dose and exposure,
• Assessment of the potential for accumulation,
• Determination of steady-state concentrations,
• Support for the biological significance of toxicological findings.

This integration offers significant advantages, particularly in long-term safety studies.

Toxicokinetic Parameters Evaluated

Within the scope of Toxicokinetics Integrated with Repeated-Dose Toxicology studies:

• Maximum plasma concentration (Cmax)
• Time to reach maximum concentration (Tmax)
• Area under the curve (AUC)
• Elimination half-life (t½)
• Systemic exposure level
• Accumulation rate
• Steady-state concentrations
• Dose-exposure relationship

are evaluated.

These parameters contribute to the accurate interpretation of toxicological results.

Studies Compliant with International Guidelines and GLP Principles

Studies conducted at NanoTox are carried out in accordance with international regulatory expectations.

Primary reference sources:

• OECD GLP principles,
• ICH safety guidelines,
• FDA toxicokinetic guidelines,
• EMA non-clinical safety guidelines.

Thanks to our GLP-compliant study infrastructure, the data obtained meet the quality standards accepted by international authorities.

Reliable Toxicokinetic Studies with NanoTox

With its expert toxicology and bioanalytical teams, advanced laboratory infrastructure, and GLP-compliant study system, NanoTox conducts “Toxicokinetics Integrated with Repeated-Dose Toxicology” studies in accordance with international standards.

We provide the reliable exposure and toxicity data required for safety assessments of pharmaceuticals, biotechnology products, medical devices, and chemical products.

For detailed information on “Toxicokinetics Integrated with Repeated-Dose Toxicology” studies, please contact NanoTox.