: Patients with Type 1 or Type 2 diabetes frequently require insulin syringes for multiple daily injections.

: Treatments involving testosterone, progesterone, or other hormones often require specific needle gauges for slow and steady release.

: Some individuals use them for at-home administration of cosmetic products, though professional consultation is always recommended.

The most common reason for buying syringes is the self-administration of essential medications.

: Pet owners often purchase syringes to administer insulin, saline treatments, or liquid medications to animals at home.

: Laboratories use them for precise liquid measurements and handling small volumes of fluids in pharmacology or biochemistry research.