What Size Needle and Syringe Should You Use for Peptide Injections?
For most peptide injections, a 30 or 31 gauge, 8 mm (5/16 inch) fixed-needle insulin syringe is the right choice - subcutaneous delivery, minimal pain, and precise dosing from a small barrel. Syringe volume depends on your dose: 0.3 mL for very small draws, 0.5 mL as the most versatile option for common peptide doses, and 1 mL when your volume exceeds 0.5 mL. Matching your syringe size to your dose is just as important as needle gauge - a small dose drawn into an oversized syringe introduces measurement error that a smaller barrel eliminates.
Injection
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