Select one of the options below:
The online master of science in toxicology at Colorado State University equips you with the expertise to understand, evaluate, and communicate the effects of chemicals and other potentially hazardous agents on human, animal, and environmental health. The program provides both foundational knowledge and practical skills in toxicology while also examining disease states at the cellular level. This flexible degree prepares you for advanced professional pathways such as medical and veterinary school, or for impactful careers in pharmaceuticals, government, consulting, and beyond.
At CSU, you benefit from faculty actively engaged in federally funded research (NIH, EPA, NSF) and from our reputation as a top research institution in veterinary and biomedical sciences.
This program is designed for students and professionals looking to expand their expertise in toxicology while balancing career or personal commitments. Typical candidates include:
An M.S. in Toxicology from CSU positions you for diverse and impactful roles in industries such as pharmaceuticals, biomedical and biotechnology including positions:
About half of the program's graduates go on to pursue doctoral or professional degrees, including Ph.D., MD, DVM, or PharmD programs. Others launch into research and leadership careers across government, healthcare, biotech, and environmental sectors.
With 25% of human disease stemming from environmental factors, this program empowers professionals to drive meaningful change in global human and animal health, sustainability, and environmental safety. Whether you’re preparing for the next stage of your academic journey or aiming to make an immediate impact in your field, CSU’s online M.S. in Toxicology offers the skills, flexibility, and affordability to get you there.
Select at least 9 credits from the following:
Program Total: 30 Credits
Dr. Julie Moreno is a neurotoxicologist whose research centers on brain aging and the cellular mechanisms driving neurodegeneration. As an associate professor in the Prion Research Center and associate director of the Brain Research Center, she investigates how misfolded proteins – such as prions and tau – disrupt brain function and contribute to neuronal toxicity in neurodegenerative protein misfolding diseases (NPMDs). Her lab focuses on the intersection of brain aging, neuroinflammation, and neurotoxicity, with particular attention to the neuroimmune axis.
Dr. Montrose is an environmental toxicologist with research interests in public health, epigenetics, and chronic illness, particularly as it relates to vulnerable and understudied populations. A primary focus of the Montrose lab is studying the negative health impacts of wildfire smoke exposure among communities and workers (e.g., wildland firefighters). In 2020, Dr. Montrose launched the Rocky Mountain Wildfire Smoke Symposium which is an annual platform for disseminating information and involves participants from academia, government and industry.
Dr. Dooley is the Director of the Center for Environmental Medicine (CEM) Analytical Laboratory and supervises all the organic chemical analysis performed in the laboratory. His research involves the development of analytical methods utilizing state of the art instrumentation to measure organic molecules of current interest. With the rapid improvements in analytical technologies, we are able to greatly improve the selectivity and sensitivity of our analytical methods for trace level chemical analysis.
| Fall semester | July 15 |
| Spring semester | November 1 September 1 (International) |
Applications will be reviewed and decided upon within 2-4 weeks following each application deadline.
Start your application online and upload materials directly into the online system. You can save your progress and return any time.
Apply NowTo be considered for admission, applicants must meet the following requirement:
The following coursework is highly recommended, though not required:
Learn more about general graduate school application requirements here: Graduate Admissions Requirements
Applicants must submit the following materials as part of the application process:
All materials should be submitted in accordance with department guidelines and application deadlines.
Complete the online graduate application and pay the nonrefundable application processing fee (payable online). As soon as you have completed the required information, please submit your application. Your application will not be reviewed until it is complete and all required materials have been received. When applying, select the program of study you’re applying to.
Request one official transcript of all collegiate work completed from all institutions attended. Transcripts from Colorado State University are not required. Transcripts must be received directly from the originating institution to be considered official.
Please Note: Students may be unconditionally admitted and registered in their first semester of courses with an unofficial transcript. Official transcripts must be submitted, prior to or during your first semester, before you can register for your second semester of graduate work. Failure to meet this condition will result in your dismissal from the Graduate School.
Electronic (preferred): Digital Transcripts must be submitted by the originating institution using a secure service such as parchment, eScrip-Safe, the National Student Clearinghouse, or e-Quals. Transcripts received via emails are considered unofficial. Use institution code 4075 for Colorado State University or gradadmissions@colostate.edu if the secure service requires an email address.
Mail (if necessary) Graduate Admissions Colorado State University – Office of Admissions 1062 Campus Delivery Fort Collins, CO 80523-1062
View your application status at any time to ensure your application checklist is complete or to check on updates.
We love learning about your goals and answering any questions you have.
