HistoTox Labs, an Inotiv company, is proud to be well-recognized for our exceptional capabilities and expertise in preclinical immunohistochemistry (IHC). We are now a leader in the industry with a vast library of optimized antibodies and a highly-trained scientific staff.



In April, 2003, Jon Bishop founded HistoTox Labs in a small space within the biology building at Colorado University, providing preclinical histology services. While supporting local CROs and many other small- to mid-sized biotech companies, the lab outgrew the small space and relocated in 2007 to a larger facility. This was customized to allow for expansion of the bone histology and immunohistochemistry (IHC) services. Since then, we’ve expanded our team considerably and also have become GLP-compliant. The team now resides in a 6,600sf secure, purpose-built facility at the foot of the Rocky Mountains in Boulder, Colorado.

The company remains committed to growing their capabilities to support routine and specialized histology, IHC, histopathology and digital pathology. Our board-certified veterinary pathologists provide a great benefit to our internal teams and to our clients.

As a valuable compliment to the IHC services we have added the latest technology with an AT2 (Aperio) high-throughput slide scanner and the well-respected Visiopharm image analysis software.

There is an ongoing commitment to operate in a highly-efficient manner to save YOU time and money. Our team understands the importance of your programs and is focused on doing what it takes to deliver exceptional quality and satisfaction.

To learn more about the acquisition, read our news release.




“I greatly appreciate your effort and help in this past year, and the supreme quality really helped us make progress.”

- Musculoskeletal Transplant Foundation



“Thank you all for your hard work. I was impressed with the full report; I wasn’t expecting something so formal and detailed. All this data is very helpful for us!”

- Kyowa Hakko Kirin California, Inc

Subscribe to updates from Inotiv

Sign up and you’ll receive the latest updates that matter to you, delivered straight to your inbox.

Subscribe now