A Journey Through Our History

The Origin

The origin of PT GSD begins in a consulting firm specialized in testing and calibration laboratories, established in 1994, thanks to the collective experience of people dedicated to the field of laboratory and conformity assessment. A group motivated by the need to create a different business model, based on customer satisfaction, continuous improvement, innovation, sustainability, and the development of its human resources. And, furthermore, with the goal of helping laboratories and other entities to improve their results by ensuring technically correct, innovative, and efficient processes. The conduct of proficiency testing, development of reference materials, and other related services has been among our priorities from the beginning.

The Journey

In 2011, we achieved accreditation as a provider of interlaboratory comparison tests under ISO 17043, in the agro-food fields (chemical, microbiological, parasitology, and sensory tests) and in the environment (also in the physico-chemical and microbiological areas), but we maintain activities related to material testing, functional tests, and sampling of water and solid samples and waste. Our vocation prompted us to develop outside of Spain, from 2023 in open circuits, after experiencing as a provider of private circuits and learning to place samples anywhere in the world. Since 2020, we have differentiated ourselves in the market under the PT GSC brand. Now the business evolution leads us to PTGSD.

PTGSD Joins Gold Standard Diagnostics

In January 2026, we became part of Gold Standard Diagnostics (GSD), under the new name Gold Standard Diagnostics Madrid PTS (also PTGSD). GSD is a leading network of companies offering diagnostic solutions for laboratories in different segments. GSD has extensive scientific experience and a solid innovation portfolio that fits perfectly with GSD's long-term vision of offering efficient, integrated, and cutting-edge solutions that improve decision-making in laboratories and increase confidence in data quality. Visit the Gold Standard Diagnostics website for more information about the product portfolio and capabilities: https://www.goldstandarddiagnostics.com/

In this context, our interlaboratory activities fit perfectly. We join the group with confidence and commitment to grow and improve this type of service for our users and customers.