International Serum Industry Association

Nothing Works Like Serum

Advancing standards & trust in the global serum industry

Announcement
Appointment of Tia Hexom, Ph.D. as CEO
We are delighted to announce the appointment of Tia Hexom, Ph.D., as the new Chief Executive Officer of the International Serum Industry Association (ISIA) starting Monday, May 18th.
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Tia brings over two decades of experience in cell and gene therapy, spanning bench science, GMP manufacturing, regulatory affairs, and executive leadership across both industry and her own consulting practice.

She has been working with serum to culture and grow cells since 2004, giving her a firsthand understanding of what end users need from this product and what it takes to produce and source it responsibly. She also brings six years of direct experience working with the manufacturing of human serum and blood products, further deepening her expertise across the supply chain. Her work in cell therapy has placed her at the forefront of evolving regulatory environments, where she has engaged with FDA and PMDA stakeholders, guided clients through IND submissions, and built quality systems from the ground up. She holds a Ph.D. in Cell and Molecular Biology from Tulane University and completed a postdoctoral fellowship in Neurosciences at UC San Diego.

Tia believes that the strength of an association like ISIA lies in the breadth of its community. She is committed to bringing together the full spectrum of voices in the serum supply chain - from producers to regulators to end users - to advance the industry through advocacy, collaboration, and shared standards.

Growing up with ranching roots in South Dakota gave Tia an early appreciation for the cattle industry that underpins this work. She is currently based in San Diego, California.

Safety update
FBS safety testing delays — US imports
Delays dating back to mid-January 2025 for Blue Tongue Virus testing from Australia, Mexico, and Central America. ISIA in ongoing contact with NVSL and posting updates.
Regulatory
H5N1 update — no FBS restrictions
USDA confirms no current restrictions on FBS or other serum in any geography. ISIA monitoring developments and maintaining communication with USDA and competent authorities.
ISIA 2027 — 22nd Annual General Meeting, April 14–15, Florence, Italy
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