PetTest U-40 Insulin Syringes 31G .3CC 5/16" 100/Box

(21 reviews) Write a Review

Product Overview

PetTest U-40 Insulin Syringes are designed to be used safely for U-40 pet insulin injections. Manufactured using high quality surgical grade steel, our syringes are easy to use, safer to handle and provide greater comfort for your pet due to the thin, fine and sharp extra lubricated needle.


  • Thin, Fine, Sharp, Extra Lubricated Needle
  • Features half unit markings for more accurate dosing
  • Tri-Bevel Tip for Greater Comfort
  • Large Clear Unit Markings
  • Extra Wide Finger Grips
  • High Quality Surgical Grade Steel
  • Protective Needle Plunger Caps
  • Single Use Only

Package includes: 100 Sterile Insulin Syringes

By purchasing syringes from, you are asserting that you are over 18 years of age and that you intend to use these syringes for the treatment of diabetes or for another legitimate medical purpose.

It is legal in most of the U.S. to purchase insulin syringes without a prescription; however, you are solely responsible for following the laws in your state. reserves the right to refuse any order in the event that filling such order would violate any federal, state, or local law or regulation.

CA, NV: In California and Nevada, you assert syringes will be used for diabetic purposes or legitimate purpose.

CT, IL, ME, NH, NY: These states require a prescription for quantities over 10 syringes. If you order over 10 syringes to these states, we must confirm your prescription. Please fax your prescription to (561) 795-1743 or send it by e-mail to

DE, NJ, US Virgin Islands: These states require a prescription to order syringes. If you order to one of these states, we must confirm your prescription. Please fax your prescription to (561) 795-1743 or send it by e-mail to

FL & VA: In Florida and Virginia, you assert that you are not a minor. A minor is anyone under the age of 18. Residents of Miami-Dade, Monroe, & Broward County require an RX prior to shipment.


(21 reviews) Write a Review

21 Reviews Hide Reviews Show Reviews

  • 5
    Love the length

    Posted by Lorrie Anne Stacey on Jan 9th 2022

    I wasn’t given a choice of length at vet thank you

  • 4
    U-40 syringe

    Posted by Thomas Lusby on Nov 10th 2021

    Sometimes I get a syringe that is not sharp.

  • 5

    Posted by Sandra Correa on Sep 27th 2021

    Best ever! Small and my pet does not feel Needle. Plus a very good deal cost wise.

  • 4
    What a difference these needles make!

    Posted by Trish M on Jul 23rd 2021

    My dog was diagnosed less than a month ago and I was given 29g 1/2 syringes. She is a small toy poodle with Cushing's disease and her skin is very thin and delicate. I'm new to injections so I know I was causing her more discomfort than necessary. These make SUCH a difference. She no longer squirms and the ordeal is over much faster. The 1/2 unit markings are great as well.
    The only reason I didn't give 5 starts is because the syringes come in packs of 10 and are not individually wrapped. I'm very paranoid about contamination and keep the open bag in an airtight container. Please PetTest, wrap them individually.
    But my little girl and I are VERY grateful!

  • 4
    .3cc Syringes

    Posted by SOPHIA GAUSE on Apr 7th 2021

    Excellent value. Quick, convenient delivery

  • 5
    The only needles I get my diabetic cat

    Posted by Lindsay on Apr 3rd 2021

    These tiny, short needles are hard to find as they’re the smallest on the market for cats if not all needles available in the US. They always work great, cause much less bruising/scarring/pain at the injection site than the larger needles so it makes a huge difference when administering insulin to my cat.
    I had forgotten they’re not open on the weekends and I don’t even know how they got this past shipment out in time so I didn’t run out.
    I’m just super impressed with this company and won’t ever change companies for feline diabetic supplies. (Thanks, guys!!!

  • 5

    Posted by Oliver on Mar 3rd 2021

    Good just like other syringes that other companies sell.

  • 5
    PetTest .3cc syringes

    Posted by Penny Best on Feb 8th 2021

    The absolute perfect size needle for my sugar baby! So much easier on my girl! Thank you for having these! This is the must have syringe!

  • 5
    This needle size was a game changer fir giving my Yorkshire her insulin injections.

    Posted by Lori Schrank on Nov 4th 2020

    Going to this size of needle made a big difference with giving my Yorkshire her insulin injections. ‼️❤️