Under normal circumstances, having a blood test (venepuncture) is a straightforward procedure
with minimal side effects. Some people may experience mild discomfort or notice a bruise, which
typically resolves within a few days.
In general, there are 3 possible types of complications that may arise from having a blood
test:
- Feeling Dizzy or Fainting - This happens to fewer than 4 out of every 100
people and can be prevented by asking to lie down when you have a blood test and ensuring
you have had plenty to drink (water) beforehand. Talk to the collector if you are worried
about feeling faint.
- Pain and Bruising - Around 1 in 7 people might get a bruise after the
blood test. More women than men might experience this because women tend to have narrower
veins. If you are currently taking blood-thinning medication, the bruising might be worse.
Let the collector know if you are taking blood-thinning medication. Ensure you apply firm
pressure to the needle site for a few minutes afterward. After the blood test, do not use
your arm to carry heavy objects or to pull or push equipment (e.g. shopping trolleys).
- Nerve Injuries - These are extremely rare. While problems can occur,
serious nerve injuries are exceptionally rare, especially during routine blood tests.
If you experience any problems after your blood test, check in with the doctor who ordered your
test, or feel free to email us at feedback@clinicallabs.com.au so we can get back to you with advice.
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