Medical News Today: Bruising after a blood draw: What to know

According to the World Health Organization (WHO), bruising after a blood draw typically heals quickly. However, if the bruise is large, it may take 2–3 weeks to fade and disappear.

A person should call their doctor if they experience any of the following symptoms:

  • the hand becoming discolored
  • numbness or tingling in the arm or hand that does not go away within a few hours
  • worsening redness and inflammation at the puncture site
  • severe pain at the puncture site
  • swelling that worsens instead of improving

If a person is unsure whether their symptoms are typical, they should call a doctor or seek medical attention.

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