BD Insulin Syringes U40 31G 6mm (Syringe)

Last Updated on 06/27/2026 ✔ Medically Reviewed by Dr. Arjun Srivastav

What Are D Insulin Syringes U40 31G 6mm?

BD Insulin Syringes U40 31G 6mm are sterile, single-use syringes used for insulin injection (U-40 insulin concentration) in diabetes management.

D Insulin Syringes U40 31G 6mm is a syringe with a syringe with needle that can be used for vaccinations and to administer injections correctly.

Doctors use this syringe for giving injections in the subcutaneous fat layer.

BD Insulin Syringes U40 31G 6mm is ideal for those who are suffering from diabetes and have to inject U40 concentration insulin directly into their bodies.

This needle is made strong and hard following all the guidelines of the medical industry and is safe for use in all patients.

Who Is The Manufacturer Of D Insulin Syringes U40 31G 6mm?

Becton Dickinson India

Composition and Appearance of D Insulin Syringes U40 31G 6mm

• BD Insulin Syringes U40 31G 6mm is an empty syringe and is safe to inject, draw out, or keep any medical fluids like injectable compounds, blood, and so on.
• It comes in a red colour-coded packaging strip, which specifically denotes the U40 strength and distinguishes it from the UU100syringes.

How Does D Insulin Syringes U40 31G 6mm Work?

Equalization Of Pressure: Before Injection

Before drawing any insulin from a closed vial, it is necessary for you to withdraw the plunger to create an amount of air inside the syringe that matches the amount of dose you want to administer.

This air injected into the vial will make sure that there is no negative pressure within the vial.

Creating The Vacuum: Drawing The Dose

As the BD Insulin Syringes U40 31G 6mm is immersed in the insulin and you pull back on the plunger, you create space in the closed plastic tube.

This makes a partial vacuum because you have made the air pressure lower in the tube than outside of it.

The increased air pressure in the vial pushes the insulin liquid up through the very thin 31G needle into the tube.

Clearing Air Bubbles: Guaranteeing Accuracy

A tap on the clear polypropylene barrel ensures that air bubbles present in the barrel move upwards towards the tip of the needle.

Slightly pressing the plunger guarantees that the air bubbles go back to the vial.

The importance of this step is to guarantee that the barrel is 100% full of insulin.

Subcutaneous Delivery: The Injection

As you push the plunger rod forward, mechanical pressure is exerted on the fluid. Since fluids are not compressible, the insulin will be forced out from the tiny hole of the 6mm needle.

BD Insulin Syringes U40 31G 6mm is important to note that the short length of 6 mm needle is specially designed to stop only in the subcutaneous layer of fat under the skin.

How To Use D Insulin Syringes U40 31G 6mm?

Let us check out how to use the D Insulin Syringes U40 31G 6mm step-by-step in the following section-

• BD Insulin Syringes U40 31G 6mm is safe to use the syringe as per the advice of a doctor.
• Use the syringe to administer the U-40 dose of insulin only once you learn from the doctors about the correct method of use.
• Otherwise, it is always better to take help from the doctors.
• The syringe is safe enough to inject into the subcutaneous fat layer.
• Check with the doctors if you have to follow any other instructions at the time of injecting the needle.

What Are The Benefits Of Using D Insulin Syringes U40 31G 6mm?

• Very fine 31G needle → less pain
• 6mm short needle → lower risk of deep muscle injection
• Clear unit markings for accurate dosing
• Designed for safe single-use injection
• Suitable for home and clinical use
• Using D Insulin Syringes U40, 31G 6mm is safe as per the norms of the FDA.
• BD Insulin Syringes U40 31G 6mm is used in cases of patients who need an immediate dose of U40 concentrated insulin in their bodies.

Safety Warning

• Single-use only
• Do not share syringes
• Incorrect syringe type or dose can lead to dangerous blood sugar levels

Side Effects / Possible Risks

Common Injection Site Effects

• Mild pain or stinging at the injection site
• Redness or irritation
• Swelling or slight itching
• Small bruise or bleeding

Less Common Effects

• Lump formation (lipohypertrophy) if injections are repeated in the same area
• Skin thickening or hardening at injection site
• Temporary skin discoloration

Rare but Serious Risks (mainly from technique issues)

• Infection at injection site (if not sterile or using a reused syringe)
• Incorrect insulin dose delivery, leading to:
  • Low blood sugar (hypoglycemia)
  • High blood sugar (hyperglycemia)
• Needle breakage (very rare with proper use)

Can I Use D Insulin Syringes U40 31G 6mm During Critical Conditions?

Pregnancy:

The D Insulin Syringes U40 31G 6mm is safe to use during pregnancy and can be used to give injections.

Breastfeeding:

Use of the D Insulin Syringes U40 31G 6mm is safe during breastfeeding.

Addictions:

Use of D Insulin Syringes U40 31G 6mm did not show any kind of interaction with addictions.

However, if a person is high on alcohol or narcotic drugs like cocaine, they may be hurt or may have to deal with intense pain at the time of administering the syringe under the subcutaneous fat layer.

Diabetic:

If your insulin has a BD Insulin Syringes U40 31G 6mm concentration, then you can use the injection syringe.

When Not To Use D Insulin Syringes U40 31G 6mm?

Never use a D Insulin Syringes U40 31G 6mm that has already been used. Always use a fresh syringe when inserting it into your skin.

How To Store And Dispose D Insulin Syringes U40 31G 6mm?

• Store in a clean, dry place
• Avoid heat and direct sunlight
• Do not reuse syringes