Needle Gauge Selection Criteria
Sep 13, 2021
There are several factors to consider when selecting the best needle gauge. First is the type of injection. For intradermal injections (displayed in purple on the continuum above), a gauge of 26 to 28 is usually sufficient. For subcutaneous injections (displayed in orange), 19 to 27 gauge works well. Intramuscular injections (displayed in blue) call for gauge sizes of 26 to 30. Notice that there is an overlap of all three injection types for gauges 27 and 26. These two gauges make a good all-round choice for the three injection types.
Another factor to consider in choosing the needle gauge is the viscosity of the medication. The thicker the viscosity of the fluid, the lower should be the gauge size to allow the medication to flow freely.
Another factor is the fact that the lower the gauge number, the stronger the needle, resulting in less risk of bending or breaking the needle. For injections of tough skin areas, a lower gauge number may be necessary to ensure the needle will not be compromised.
Pain is the last factor to consider. The higher the gauge number, the less pain or bruising experienced by the patient. Lower gauge numbers are thicker, which cause more pain and more bruising; and therefore, more patient trauma.
Patient bruising is very similar to pain. The thicker the puncture device, the greater the risk of bruising the patient. Also, the longer the needle, the greater the risk of bruising.
If you have any questions, please contact us. Our factory can produce various customized needles, medical needles, puncture needles, biopsy needles, vaccine needles, injection needles, pencil point side hole needles, hypodermic needles, blunt needles, syringe needles, veterinary needles, hollow bleeding needles, spinal needle, ovum pick up needles, etc. If you need customized needle products, please contact us. We look forward to your inquiry! The quality of the products manufactured in our factory will surely satisfy you!
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