PetTest U-40 Syringes, 31 Gauge x 5/16-in

By PetTest
Rated 4.1 out of 5 stars
Prescription Item
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PetTest U-40 Syringes, 31 Gauge x 5/16-in, 0.5-cc, 100 syringes slide 1 of 1
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PetTest U-40 Syringes, 31 Gauge x 5/16-in, 0.5-cc, 100 syringes slide 1 of 1

$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.

ReviewsWrite a Review

Rated 4.1 out of 5 stars
20 Reviews
Would recommend to a friend

20 Customer Reviews

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 Wendy 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!

Rated 1 out of 5 stars
By Davey on Jan 25, 2022

bubbles bubbles

Not sure what is up with these syringes but they are constantly filling with bubbles. I have used different ones in the past without this problem.

Rated 5 out of 5 stars
By CatsMomma on Dec 15, 2021

Good fit for my cat

Newly diagnosed diabetic cat. This was the 3rd different size of needles I've tried. This one is our best fit. Only issue is it doesn't come with a sharps disposal container.

Rated 3 out of 5 stars
By Astracat on Jan 16, 2022

Not as good

These are shorter and more apt to bend than other brand we are used to using.

Rated 5 out of 5 stars
By thebeastiesmom on Jul 23, 2021


These syringes are a game-changer! I don't have the steadiest hands and giving the shots to my squirmy dog can be a challenge. I was always so scared I would poke her way too far (which I did because she has a tendency to back into the needle) and it was awful. With these, the needle is not just thinner but it's shorter which make things SOOOO much easier and more comfortable. If I can get a good visual and don't push the needle in all the way she has no reaction to it at all and THAT is HUGE! The plunger pushes through nicely. Not as easily as the last one we had but way better than the first brand we started with. Definitely easy enough for a one handed stick. They have the perfect measurements on them to make the draws easy. I have found because the needle is smaller it's a little harder to draw so it's important to warm it in your hands a min or plan for a slow draw or to have to go back and forth on it a couple times for a bubble. Not unlike most syringes though. (Mainly sharing for the new people). The only con I can come up with is because the needles are so thin, they sometimes struggle to get into a new vial of insulin. What I did was take one of my old brand of syringes poked at it a while to break it in. It's not necessary though, just don't be surprised if you get a bent needle from time to time. These work perfectly for the Vetsulin insulin. Chewy has a great price on them too! Sometimes cheaper than others AND you can get free shipping if you meet the requirement, it saves your pet and vet info to make it easy to rebuy & it's great to be able to have the autoship because there's nothing like forgetting and being caught without syringes. If you're debating getting this brand for the first time think of it this way, which would you rather get a shot with? Yours or ones that are thinner and shorter? Your dog deserves the same!