Is it life-threatening to have blood on return during IM injection?

Hello,

Welcome to icliniq.com.

I understand your concern.

Usually, we do not inject when during the return there is blood. However, we often recommend the patient:

1. Not to use the injected muscle or leg for a few days.
2. Apply cold compresses locally to avoid edema or hematoma.
3. Look for signs of infection. Sometimes, an infection might occur and that site becomes painful, a lump might appear.

If you need to inject another vial, please report what you experienced the last time to your primary doctor, so can advise stopping giving the injection until we are totally sure nothing has happened on that muscle.