The correct injection technique
The insulin is injected into the subcutaneous fatty tissue
Subcutaneous fatty tissue
To achieve a good insulin dose effect it is essential to inject the insulin into the subcutaneous fatty tissue (subcutaneous injection) and not into the muscle. If insulin is injected into the muscle, this can lead to severe hypoglycaemia.
The correct needle length and injection technique are crucial for correct injection
- Injections with ultra short pen needles (4 and 6 mm) provide reliable insulin delivery into the subcutaneous fatty tissue (subcutaneous injection).
- The correct needle length is crucial and is determined in consultation with your physician at the start of pen therapy.
- The choice of injection technique together with the right needle length can avoid injection into the muscle.
As a rule, the following needle lengths are recommended:
- Children and adolescents
4 mm or 6 mm needle length
4 mm, 6 mm or 8 mm needle length
In general, therapy tends to be started with the shorter pen needles.
The correct injection technique for different needle lengths
For 4 mm needle length
Hold the needle vertically at an angle of 90 degrees, without creating skin fold (for some children, very slim adults and when injecting into the thigh, forming of a skin fold may prove necessary).
For 6 mm and 8 mm needle length
Injection at an angle of 90 degrees with a skin fold or 45 degrees without a skin fold.
Correct forming of a skin fold
- Create the skin fold using thumb and index finger (possibly also using middle finger).
- Keep skin fold loose and relaxed. Do not press together hard, resulting in pain or turning the skin white.
- If all fingers are used, there is a risk of also including the muscle. This can lead to an undesired intramuscular injection.