What should owners of Collie mixes prioritize regarding the MDR1 mutation status?

Answer

Genetic testing via a simple cheek swab

Genetic testing for the MDR1 mutation is highly recommended for Collie mixes. This test allows veterinarians to select safe and effective treatments by knowing if the dog's protective blood-brain barrier mechanism is compromised.

What should owners of Collie mixes prioritize regarding the MDR1 mutation status?
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