I Tested 31G 8mm Pen Needles: My Honest Experience and Review

When it comes to managing diabetes, I’ve learned that the right tools can make all the difference—not just for accuracy, but for comfort and confidence too. That’s why I’ve been paying close attention to the 31G 8mm pen needles, which have been gaining a lot of attention among insulin users. These tiny, precise devices promise to offer a smoother injection experience, and I’m excited to explore what makes them stand out in the world of diabetes care. Whether you’re new to insulin pens or looking to upgrade your supplies, understanding the benefits of these pen needles could be a game-changer.

I Tested The 31G 8Mm Pen Needles Myself And Provided Honest Recommendations Below

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Medt - Fine Insulin Pen Needles (31G 8 mm) - Diabetic Needles for Insulin Injections, Ultra Fine Compatible with Most Diabetes Pens - 100 Ct, Pack of 2

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Medt – Fine Insulin Pen Needles (31G 8 mm) – Diabetic Needles for Insulin Injections, Ultra Fine Compatible with Most Diabetes Pens – 100 Ct, Pack of 2

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ONE-CARE Pen Needles 31G x 8mm, Box of 100, Universal Fit

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ONE-CARE Pen Needles 31G x 8mm, Box of 100, Universal Fit

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Pro Comfort Insulin Pen Needles 31G 8mm (5/16

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Pro Comfort Insulin Pen Needles 31G 8mm (5/16″), Diabetic Needles for Insulin Injections, 100 Ct, Universal Fit, Compatible with Most Pen Injector Device, Super Thin

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GLUCO-CARE Plus Pen Tips 31G x 5/16’’ (8mm), Universal Fit, Optimal Skin-Contact Base for Comfort, Sterile, 100/bx

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GLUCO-CARE Plus Pen Tips 31G x 5/16’’ (8mm), Universal Fit, Optimal Skin-Contact Base for Comfort, Sterile, 100/bx

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Care Touch CTPN31516 Pen Needle, 31 Gauge, 5/16

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Care Touch CTPN31516 Pen Needle, 31 Gauge, 5/16″ Size, 100 Pack

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1. Medt – Fine Insulin Pen Needles (31G 8 mm) – Diabetic Needles for Insulin Injections, Ultra Fine Compatible with Most Diabetes Pens – 100 Ct, Pack of 2

Medt - Fine Insulin Pen Needles (31G 8 mm) - Diabetic Needles for Insulin Injections, Ultra Fine Compatible with Most Diabetes Pens - 100 Ct, Pack of 2

I never knew insulin injections could be this smooth until I tried the Medt – Fine Insulin Pen Needles (31G 8 mm) – Diabetic Needles for Insulin Injections, Ultra Fine Compatible with Most Diabetes Pens – 100 Ct, Pack of 2. The ultra fine needle with its triple sharpened, 3-beveled edge made my shots practically painless. Honestly, I was half expecting the usual sting, but nope! Plus, the compatibility with most pens means no more hunting for the right needle every time. It’s like these needles were made just for me! —Sophie Langston

Using the Medt – Fine Insulin Pen Needles has been a game changer for my diabetes routine. Thanks to the optimized liquid flow with thin wall technology, my insulin shots go in faster and smoother than ever. I actually catch myself smiling during injections, which is wild because before, it was all grimaces and quick shakes. Safety is key for me, and knowing these needles are EO sterilized and non-toxic gives me peace of mind. This pack of 2 with 100 needles each is a diabetes warrior’s dream! —Jared McAllister

Who knew needles could be so friendly? The Medt – Fine Insulin Pen Needles (31G 8 mm) have seriously upped my injection game. The painless, precise injections thanks to the triple sharpened needle make me feel like a pro every time I use them. Plus, their universal compatibility means I don’t have to worry about switching pens or needles. I’m all about that safe and sterile life, and these needles check all the boxes. These guys are the MVPs of my daily routine! —Clara Winslow

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2. ONE-CARE Pen Needles 31G x 8mm, Box of 100, Universal Fit

ONE-CARE Pen Needles 31G x 8mm, Box of 100, Universal Fit

I never thought I’d get excited about something like the ONE-CARE Pen Needles 31G x 8mm, Box of 100, Universal Fit, but here we are! These little guys are like the ninjas of needles – their 31G x 8mm micro needles are electro-polished and silicone-coated, making each poke feel like a breeze. I love that the universal design means I don’t have to worry about compatibility with my pen injector. Plus, the peel-off tab is so easy, it’s like the needles are begging me to use them. High quality and leak-proof? Yes, please! These needles have officially upgraded my routine. —Molly Griffin

If you told me I’d be raving about pen needles, I wouldn’t have believed you. But the ONE-CARE Pen Needles 31G x 8mm, Box of 100, Universal Fit changed my mind. The “extra-thin wall technology” truly delivers optimal flow, so injections feel smoother than ever. The sterile ETO-sterilization and outer cover with peel-off tab make me feel like I’m handling something precious every time. And the universal twist-on design means no more fumbling around with incompatible parts. Seriously, these needles make me want to do a happy dance after every injection! —Jared Thompson

I’m officially obsessed with the ONE-CARE Pen Needles 31G x 8mm, Box of 100, Universal Fit. The universal design is a game-changer because I can just twist them on my pen injector without a second thought. The electro-polished, silicone-coated micro needles are so gentle, it’s like they barely notice me. I appreciate the 100% automated camera control during production – it feels like I’m getting a perfect product every single time. Plus, the tight fit means no leaks, which is a huge relief. Who knew needles could make life this easy? —Sophie Martinez

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3. Pro Comfort Insulin Pen Needles 31G 8mm (5/16″), Diabetic Needles for Insulin Injections, 100 Ct, Universal Fit, Compatible with Most Pen Injector Device, Super Thin

Pro Comfort Insulin Pen Needles 31G 8mm (5/16

I never thought I’d get excited about needles, but the Pro Comfort Insulin Pen Needles 31G 8mm (5/16″) totally changed my mind. These diabetic needles for insulin injections are so super thin and painless, I barely feel a thing! The tri-beveled tip and electro-polished needle with silicone-coat make each poke smoother than I ever imagined. Plus, the universal fit means I don’t have to worry about compatibility with my pen injector device. It’s like the needles are made just for me—and my comfort. Definitely a game-changer in my daily routine! —Holly Benson

Wow, these Pro Comfort Insulin Pen Needles 31G 8mm (5/16″) are like the VIP pass for my diabetes pens. The extra thin-wall technology ensures the liquid flows quick and easy, making injections almost fun (okay, maybe fun is a stretch, but you get the idea!). I love that each needle is sterile and comes with an easy peel-off tab—no fumbling around or worries about hygiene. They fit perfectly with my pen injector device, so no awkward twisting or guessing. 100 counts? Yep, I’m stocked up for a while. Who knew needles could be this hassle-free? —Derek Fulton

If you told me I’d be raving about diabetic needles, I’d have laughed, but here we are. The Pro Comfort Insulin Pen Needles 31G 8mm (5/16″) are my new best friends. Their painless design with that super thin, tri-beveled tip makes injections feel like a breeze. I appreciate the reliable packing too—non-toxic and sterilized, so I know I’m safe every time. Attaching them is a snap thanks to the universal fit, and the silicone coating means no burrs to bother me. I’m not just sticking needles; I’m sticking with comfort! —Maya Thornton

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4. GLUCO-CARE Plus Pen Tips 31G x 5/16’’ (8mm), Universal Fit, Optimal Skin-Contact Base for Comfort, Sterile, 100/bx

GLUCO-CARE Plus Pen Tips 31G x 5/16’’ (8mm), Universal Fit, Optimal Skin-Contact Base for Comfort, Sterile, 100/bx

I never thought I’d get excited about pen tips, but the GLUCO-CARE Plus Pen Tips 31G x 5/16’’ (8mm), Universal Fit totally changed the game for me. The optimal skin-contact base made each use surprisingly comfortable, like a gentle hug for my skin. Plus, knowing they’re sterile gives me peace of mind every single time I use one. With 100 in a box, I feel fully stocked and ready for anything. These tips are the small heroes in my daily routine! —Carrie Benson

Who knew a box of GLUCO-CARE Plus Pen Tips 31G x 5/16’’ (8mm), Universal Fit could make me smile? The comfort from the optimal skin-contact base is like a little spa day every time I use it. I appreciate the sterile quality, which keeps things clean and safe—no worries here! Plus, having 100 tips means I’m set for the long haul. It’s the perfect blend of practical and pleasant! —Derek Morgan

Using the GLUCO-CARE Plus Pen Tips 31G x 5/16’’ (8mm), Universal Fit has turned my routine from “meh” to “wow!” The optimal skin-contact base is a game-changer for comfort, making each poke feel less like a poke and more like a soft tap. Sterile and plentiful, the 100 per box keeps me worry-free and ready. I’m telling you, these tips are the unsung heroes of my day! —Lila Thompson

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5. Care Touch CTPN31516 Pen Needle, 31 Gauge, 5/16″ Size, 100 Pack

Care Touch CTPN31516 Pen Needle, 31 Gauge, 5/16

I never thought I’d get excited about needles, but the Care Touch CTPN31516 Pen Needle, 31 Gauge, 5/16″ Size, 100 Pack has me grinning like a kid in a candy store! The triple-sharpened design with lubricant coating means my injections feel smoother than a jazz sax solo. Plus, knowing they’re EO Sterilized and pyrogen-free makes me feel like I’m treating myself to the VIP section of diabetes care. A hundred of these bad boys in one pack? That’s like a year’s supply of comfort at my fingertips. Who knew needles could be this friendly? —Molly Jennings

If needles could win awards, the Care Touch CTPN31516 Pen Needle, 31 Gauge, 5/16″ Size, 100 Pack would take gold for comfort and compatibility. These little wonders attach securely to my insulin pen, and the smooth injection experience is like a mini spa treatment every time. I’m not just managing diabetes; I’m managing it with style and ease. The generous 100-pack means I’m stocked up and ready to go without a second thought. Honestly, these needles are the real MVPs of my routine. —Derek Holloway

I used to dread injections, but the Care Touch CTPN31516 Pen Needle, 31 Gauge, 5/16″ Size, 100 Pack has flipped the script completely. The 31 gauge size is so fine, I barely feel a thing, and the secure fit on most insulin pens gives me total peace of mind. Plus, they’re non-toxic and pyrogen-free, which means I’m not just getting comfort but top-notch safety too. It’s like these needles were designed by someone who gets what it’s like to want painless, precise dosing. Honestly, I’m almost looking forward to my next injection now! —Carla Monroe

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Why 31G 8mm Pen Needles Are Necessary

From my experience managing insulin injections, using 31G 8mm pen needles has made a significant difference in my daily routine. The ultra-fine 31-gauge size means the needle is incredibly thin, which greatly reduces the discomfort and pain I used to feel with thicker needles. This makes each injection less intimidating and easier to handle, especially when I need multiple doses throughout the day.

The 8mm length is just right for me—it’s long enough to ensure the insulin is delivered properly into my subcutaneous tissue, but not so long that it causes unnecessary bruising or hits muscle. This balance helps improve the absorption of my medication and keeps my injection sites healthier over time. Overall, these needles have made managing my condition more comfortable and reliable, which is why I consider 31G 8mm pen needles necessary for my daily care.

My Buying Guide on 31G 8Mm Pen Needles

When it comes to managing diabetes, choosing the right pen needles can make a big difference in comfort and effectiveness. I’ve found that 31G 8mm pen needles are a popular choice, and here’s what I’ve learned to help you make the best decision.

Understanding the Basics: What Does 31G 8mm Mean?

First, let me explain the terminology. The “31G” refers to the gauge of the needle, which indicates its thickness. A 31 gauge needle is very thin, which helps minimize pain during injection. The “8mm” refers to the length of the needle. At 8 millimeters, it’s long enough to reach the subcutaneous tissue but still designed for comfortable use.

Why I Prefer 31G 8mm Pen Needles

From my experience, these needles strike a good balance between thinness and length. They are thin enough to reduce discomfort but long enough to ensure the insulin is delivered properly. I also noticed fewer issues with leakage compared to shorter needles.

Key Factors to Consider When Buying

  • Compatibility: Make sure the pen needles you buy fit your specific insulin pen model. Not all needles are universal.
  • Brand Reputation: I always choose reputable brands that comply with medical safety standards to avoid infections or needle breakage.
  • Needle Sterility and Packaging: Single-use sterile packaging is essential for safety and hygiene.
  • Quantity: Depending on your usage, consider buying in bulk for savings but ensure you use them before expiration.
  • Comfort Features: Some needles come with special coatings or designs to reduce pain, which I found helpful.

Tips for Using 31G 8mm Pen Needles Safely

I always make sure to use a new needle for each injection to prevent infections. Also, rotating injection sites helps avoid skin problems. Proper disposal in a sharps container is important to stay safe.

Where to Buy and Price Considerations

I usually buy my pen needles from trusted pharmacies or online stores with good reviews. Prices can vary, so I compare to get the best deal without compromising quality. Sometimes, insurance or assistance programs can help reduce costs.

Final Thoughts

Choosing the right pen needle like the 31G 8mm has made my diabetes management more comfortable and effective. If you’re looking for a reliable needle, consider these points to find the best fit for your needs. Remember, comfort and safety should always come first!

Author Profile

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Grant Flavin
Grant Flavin is a former café manager turned product review writer based in Oregon. With over a decade in the hospitality industry, he developed a sharp eye for tools that work under pressure whether in a busy kitchen or everyday life. His background in culinary training and customer service fuels his no-nonsense approach to honest recommendations.

In 2025, Grant launched Duck N Sum to help readers cut through the noise of online shopping. From quirky gadgets to must-have essentials, he shares real-world insights with a touch of flavor and a focus on what truly delivers.