Aussie Shepherd MDR1 DNA Test Before Worming

The ABCB1 (MDR1) mutation is a genuinely important thing to check before worming an Australian Shepherd — ivermectin and several other common antiparasitic drugs can cause serious neurological toxicity in dogs carrying one or two copies of the faulty gene, and Aussies are one of the highest-risk breeds. A targeted genetic test will give you a definitive answer: clear, carrier, or affected. That's far more reliable than assuming either way. Are you mainly looking for that single MDR1 result, or would a broader health panel that includes MDR1 alongside other Aussie-relevant markers be more useful to you?

That makes sense — you want a clear answer quickly rather than a whole profile you don't need right now. Has your vet already mentioned which wormer they're planning to use, or is the appointment partly to discuss options? And is she showing any symptoms that are prompting the worming, or is this routine?

Completely the right instinct. One thing worth knowing upfront: most mail-in DNA tests take 2–4 weeks for results, so you may not have the answer before next week's appointment regardless of which kit you order. I'd strongly recommend calling the vet now and flagging that she's an Aussie with unknown MDR1 status — any responsible vet will simply avoid ivermectin-based products until you have the result, which is the safest protocol anyway. That said, getting her tested is still absolutely worth doing for future treatments. For the test itself, the one I'd point you to is the Wisdom Panel Premium — available on Amazon UK. It includes the ABCB1/MDR1 mutation as part of its health screening panel, covers over 200 genetic health tests, and gives you breed confirmation too. The cheek swab is straightforward, results come via app. It's not a cheap kit, but for an Aussie owner it's genuinely the most useful single test you can buy — MDR1 included, plus several other conditions relevant to the breed. If you want MDR1 only and want to keep costs down, DDC Veterinary and Animal DNA Diagnostics both offer standalone MDR1 tests by post, but those aren't on Amazon and take similar time.

Yes — a clear result is genuinely useful information too. It means every vet or groomer who ever asks about her MDR1 status gets a documented answer rather than a guess. And if you ever rehome her, breed her, or have a different vet in an emergency, that record matters. The result lives in the Wisdom Panel app permanently, so it's there whenever you need it. Definitely worth the one-time test.