Winter Holiday: WSU will be closed from Dec 25 – January 1. Samples submitted after Dec 18 will not have results available until January 4.
The MDR1 genetic test offered by WSU will determine if your pet has the MDR1 mutation. For dogs and cats with the MDR1 mutation, common medications can be potentially deadly.
Share the results with your veterinarian to let them know to avoid or adjust the dose of certain medications.
Veterinary pharmacologist Dr. Katrina Mealey discovered the MDR1 mutation in cats and dogs and is recognized worldwide as the leading expert in identifying problem medications. When you test with us, you will have access to a question portal monitored by Dr. Mealey.
Our MDR1 genetic tests
Around 4% of all cats, roughly 4 million in the U.S. alone, have the MDR1 genetic mutation. Recently discovered by Dr. Katrina Mealey at WSU, she and her team are conducting research to learn which cat breeds are most affected and to identify medications that may cause adverse reactions in cats.
Why choose us?
Get your results in as little as one week.
Online access to a board-certified veterinary pharmacologist when you test with us.
WSU discovered the MDR1 mutations and developed the first diagnostic tests.
What is multidrug sensitivity?
Some dogs and cats have a mutation in the MDR1 (multidrug resistance 1) gene also known as the ABCB1 gene, which plays an important role in limiting drug distribution to the brain and in enhancing the excretion of many drugs. Animals with the mutation may have severe adverse reactions – including tremors, disorientation, blindness, severe muscle weakness, and death – to some common medications.