subcutaneous injection how far to inject into skin
How do I give a subcutaneous injection? Subcutaneous injections can be given straight in at a 90 degree angle or at a 45 degree angle. Give the injection at a 90 degree angle if you can grasp 2 inches of skin between your thumb and first finger. If you can grasp only 1 inch of skin, give the injection at a 45 degree angle. 1  Open the alcohol wipe: Wipe the area where you plan to give the injection. 2  Prepare the needle: Hold the syringe with your writing hand and pull the cover off with your other hand. 3  Grasp the skin: With your other hand, grasp the skin.