Not all vials are the same size, and not all cases fit all vials. Here's a quick guide to the most common vial sizes and which VialLock case works best.
3mL Vials
Dimensions: ~16mm diameter, ~38mm tall (about 1.5" x 0.6")
The most common size in peptide and GLP-1 protocols. Semaglutide, tirzepatide, BPC-157, TB-500, and most research peptides come in 3mL vials. All VialLock Essential cases are designed for 3mL vials.
5mL Vials
Dimensions: ~16mm diameter, ~59mm tall (about 2.3" x 0.6")
Common for larger-dose compounds and some testosterone formulations. Taller than 3mL but the same diameter.
10mL Vials
Dimensions: ~22mm diameter, ~55mm tall (about 2.2" x 0.85")
Standard for testosterone cypionate/enanthate used in TRT. Wider than peptide vials and needs a specifically sized case.
VialLock Sizing
All current VialLock Essential cases are optimized for 3mL vials. Available in 2, 3, 4, 6, 8, 10, 12, 16, 20, 25, 30, 50, and 100-vial configurations.
Browse all VialLock cases and find the right fit.