| General Hypodermic Needle | 18G–30G | 13–50 mm | Subcutaneous, intramuscular, and intravenous medication administration; fluid withdrawal when appropriate. | Hospitals Clinics Distributors | Stainless-steel cannula, plastic hub, bevelled tip, color-coded hub options, sterile single-use packaging. | Ethylene oxide or radiation, depending on validated product design and packaging. | ISO 7864; ISO 9626; ISO 6009 |
| Insulin Pen Needle | 29G–34G | 4–12.7 mm | Subcutaneous insulin and other medication delivery through compatible pen-injector systems. | Diabetes-care Providers Pharmacies Home-care Channels | Ultra-thin stainless-steel cannula, screw-on or compatible pen connection, often with dual-ended needle protection. | Ethylene oxide is commonly used for individually packaged sterile units. | ISO 11608-2; ISO 9626 |
| Dental Injection Needle | 27G–31G | 10–38 mm | Local anesthetic delivery for infiltration, nerve blocks, and other dental procedures. | Dental Clinics Dental Distributors Public Health Systems | Stainless-steel cannula, dental cartridge-compatible hub, short or long configuration, sealed sterile pack. | Ethylene oxide or radiation, subject to product validation. | ISO 7864; ISO 9626; ISO 6009 |
| Blood Collection Needle | 18G–23G | 19–38 mm | Venipuncture and blood collection using evacuated tubes or collection sets. | Diagnostic Laboratories Hospitals Blood Banks | Double-ended stainless-steel needle, tube-holder compatibility, color-coded hub, optional pre-attached holder. | Ethylene oxide is widely used for sterile blood collection assemblies. | ISO 7864; ISO 9626; ISO 6009 |
| Safety Hypodermic Needle | 18G–30G | 13–50 mm | Medication injection where needlestick injury prevention is an important workflow requirement. | Hospitals Emergency Services Occupational-health Programs | Stainless-steel needle with hinged, sliding, or fixed safety shield designed to reduce accidental needlestick exposure. | Ethylene oxide or radiation, depending on validated configuration. | ISO 7864; ISO 23908; ISO 6009 |
| Spinal Needle | 22G–27G | 89–150 mm | Spinal anesthesia, lumbar puncture, and cerebrospinal-fluid sampling by qualified clinicians. | Operating Rooms Anesthesia Departments Specialty Distributors | Long stainless-steel cannula, pencil-point or cutting bevel, stylet, transparent or color-coded hub options. | Ethylene oxide or radiation, with sterile barrier packaging. | ISO 7864; ISO 9626; ISO 6009 |
| Biopsy Needle | 14G–22G | 100–200 mm | Collection of tissue samples for histopathology and image-guided diagnostic procedures. | Radiology Centers Pathology Services Specialty Hospitals | Rigid stainless-steel cannula, cutting or core-sampling geometry, depth markings, and procedure-specific stylet designs. | Ethylene oxide or radiation, depending on the device and packaging system. | ISO 7864; ISO 9626; applicable device-specific regulatory requirements |
| Blunt Fill or Transfer Needle | 14G–21G | 25–50 mm | Withdrawal or transfer of medication and fluids from containers where a sharp injection point is not required. | Pharmacies Compounding Facilities Hospitals | Stainless-steel cannula with blunt or filtered tip options, luer-compatible hub, and single-use sterile packaging. | Ethylene oxide or radiation, according to validated manufacturing controls. | ISO 7864; ISO 9626; ISO 6009 |
| Mesotherapy or Cosmetic Injection Needle | 27G–34G | 4–13 mm | Superficial intradermal or subcutaneous delivery in aesthetic and dermatological procedures, subject to local regulations. | Dermatology Clinics Aesthetic Practices Medical Distributors | Fine stainless-steel cannula, luer or specialized hub, short-length options, and sterile individual packaging. | Ethylene oxide is commonly used for individually packaged sterile products. | ISO 7864; ISO 9626; ISO 6009 |
| Veterinary Injection Needle | 16G–25G | 13–50 mm | Administration of vaccines, medicines, and fluids in companion animals, livestock, and other veterinary settings. | Veterinary Hospitals Livestock Services Animal-health Distributors | Stainless-steel cannula, luer or equipment-compatible hub, multiple wall thicknesses, and sterile single-use options. | Ethylene oxide or radiation, depending on the validated product specification. | ISO 7864; ISO 9626; ISO 6009 |