Collect supplies. Inspect the vial for any crystallization, clumping, or discoloration. If present, discard and open a new vial. Wash hands.
Roll vial 10 times; excess agitation can damage the insulin and cause precipitation.
Wipe top of bottle with alcohol or cotton ball soaked in alcohol. Push plunger up and then down to the number of units to be drawn up. Insert needle into vial and push plunger to empty the air into the vial.
Pull plunger down to die prescribed number of units. Draw 1-2 units extra to make up for insulin bubbles to be pushed out. Inspect the syringe for any bubbles and tap with a finger or against a table to drive them to the top of the syringe, and then push out. Be sure the correct dose is still in the syringe; if it isn't, draw more. Many patients have an unfounded fear of injecting air by mistake but are afraid to discuss it. Every patient should be reassured that in-
jeciing air in the subcutaneous tissue does no harm other than decreasing the intended dose.
Lightly pinch up the skin; holding the syringe like a pencil, insert the needle to the hub and push the plunger slowly. Wait 5 seconds and pull out the syringe.
Dispose of sharps in the recommended way.
Do not massage the area. Note any back-leakage of insulin.
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