Insulin Syringe
Also known as: U-100 syringe · insulin pin
A small-gauge, low-volume syringe (typically 29–31 gauge, 0.3–1mL capacity) calibrated in insulin units for subcutaneous injection.
Insulin syringes are the default tool for peptide injection because their short, fine needle (typically 5/16 inch, 29–31 gauge) delivers subcutaneous injection with minimal discomfort and minimal bruising. The syringe body is calibrated in 'units' where 100 units equals 1mL — so a 30-unit dose is 0.3mL of reconstituted solution.
Standard sizes are 0.3mL (30 units), 0.5mL (50 units), and 1mL (100 units). The 0.3mL size is preferred for peptide research because its finer gradations give more accurate small-dose measurement. U-40 syringes exist but are calibrated differently — always confirm syringe type before drawing dose.
Related Terms
Units (Insulin Syringe)
The volumetric graduations on a U-100 insulin syringe, where 100 units equals 1mL of solution.
Subcutaneous (SubQ) Injection
Injection into the fatty layer immediately beneath the skin and above muscle tissue.
Drawing Dose
The technique of extracting a measured dose of reconstituted peptide from the vial into an insulin syringe.
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