PETTEST Advocate Insulin Syringes U-40 8mm x 31G with 1/2 Unit Markings, 0.5-cc, 100 syringes -

PetTest Advocate Insulin Syringes U-40 8mm x 31G with 1/2 Unit Markings

By PetTest
Rated 3.9167 out of 5 stars
Prescription Item

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$19.99Chewy Price
$18.99Autoship Price
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About This Item


PetTest U-40 Syringes, 31 Gauge x 5/16-in are some of the thinnest, featuring 31-gauge needles. This helps make injection more comfortable for your furry family member compared to thicker 29-gauge U-40 needles. The length of the 5/16” needle also helps reduce the risk of a painful injection to your pet’s muscle. These syringes are specifically designed to be used with all U-40 insulins. Both sizes, the 0.3-cc and 0.5-cc have easy-to-read ½ unit marking for accurate dosing every time. The needles are extra sharp and lubricated and have a tri-bevel tip for added comfort, while the extra-wide finger grips allow for unmatched control. These syringes come with protective needle and plunger caps.

Proudly sourced directly from the manufacturer or their approved distributor. Guaranteed genuine and backed by the manufacturer.

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ReviewsWrite a Review

Rated 3.9167 out of 5 stars
24 Ratings
Would recommend to a friend

24 Customer Reviews

Always consult a veterinarian about your pet’s health needs. Customer reviews should not be used as medical advice.
Rated 5 out of 5 stars
By Rachel on May 8, 2023


These are the shortest, thinnest syringes I’ve found! My cat would look back at me and growl with other needles. With these, she doesn’t even flinch! Wouldn’t you want a super thin needle too? I have used these for over a year and have had no problems. I use the .5cc. I would highly recommend them!

Rated 1 out of 5 stars
By Mary on Sep 23, 2022

Regret Buying These

I bought these U-40 syringes because they are the only ones I could find with a short needle which I thought would be better for my cat. Although the gauge indicates a skinnier needle, it seemed to hurt my cat. Also, I finally figured out that the tiny bit of wetness on his fur after I withdrew the needle was due to a droplet of insulin at the exterior base of the needle. It took me a couple weeks to determine that it wasn't me, but the syringe. I'm back to using UltiCare which my cat doesn't seem to feel and which leaves no droplet of insulin at the entry point.

Rated 3 out of 5 stars
By Beck on Jun 4, 2022

I miss the .3cc syringes, but these are good.

The needle is nice and tiny, and doesn’t seem to hurt, but I really hope the .3cc are back in stock soon for our particular needs. We give our little dog 2 or 2 1/2 units (based on his readings), and at 6 am it’s really difficult to see those little lines, as the first listed digit is 5. It can be done, but it’s so much easier on the .3cc syringe. Those don’t seem to be available anywhere, and haven’t been for a few months.

Rated 3 out of 5 stars
By Tonia on Jun 4, 2022

Syringes for Cat

I prefer the .3cc over the .5cc, but they've been out of the .3cc and I had to purchase the .5cc. The .5cc is not as convenient for me since she gets such a small amount and it's easier to read with the .3cc. However, these are better than what I had to purchase from my vet when I couldn't get any from Chewy while they were out with our supply issues.

Rated 4 out of 5 stars
By Haggis on Apr 2, 2022

Easy to handle syringes

At first I was leery of the .5ml as opposed to the .3ml syringes I had been using. The markings are not as distinct. However, I've found that they are easier to handle, being a bit bigger around. They still have air bubble issues, but not nearly as bad as the .3ml . Overall, they work well.

Rated 1 out of 5 stars
By Susan on Mar 20, 2022

Cheep and Not as easy to use as BD pet syringes

Could not find BD on the Chewy Website so I purchased these. The syringe quality is not the same as BD. I find it difficult to move the plunger to pull the correct dose. I will purchase BD at my Vet if Chewy is unable to get them stock them.

Rated 5 out of 5 stars
By Peacefeline on Mar 21, 2022

Best value and great syringes

These insulin syringes were recommended to me in a feline diabetes group. These are great, work perfectly with my cats insulin and are really affordable. There are 10 in a pack and there are 10 packs in the box.

Rated 5 out of 5 stars
By Syringes on Mar 4, 2022

Smaller needle

Was much more gentle to use these syringes on my Shih Tzu than the longer needles most vets start you with. It takes a lil longer to get the insulin drawn in but no big deal to comprise time for comfort for my fur baby

Rated 5 out of 5 stars
By ANDY on Mar 26, 2022

PetTest U-40 Syringes, 31 Gauge x 5/16-in I LOVE THESE SYRINGES


Rated 5 out of 5 stars
By Jazz on Mar 20, 2022

Less pain shot

Less pain shorter and thinner needle. It is a help! Thanks for caring about dogs so much!