Marks are less fine (0.1 mL), so it's a bit less precise for small doses
Oral capsules or sublingual preparations deliver the peptide to the target tissue
A recovery-anchored blend (think a BPC-157/TB-500 Wolverine stack) sets its dose so the tendon-and-ligament peptides land in their studied range, and any skin peptide rides along as a bonus
Non-prescription and compounded peptides such as BPC-157, CJC-1295/Ipamorelin, AOD-9604, and MOTS-c are not FDA-approved for weight loss and lack the same regulatory oversight and clinical safety data as the GLP-1 drugs in the table above, which is why they should only be used under the guidance of a licensed medical provider who can order lab work, personalize dosing, and monitor for side effects throughout treatment
Discontinue use and consult a healthcare provider if significant adverse effects occur
Lyophilized peptide vials are commonly 2 mL, 3 mL, 5 mL, or 10 mL