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Can I Exercise After a Blood Test?

Can I Exercise After a Blood Test

Fitness freaks often ask a question after a blood test: Can I exercise after a blood test? The answer is: Light activity is fine after a blood test. However, there are a few things to consider, especially the type of exercise, the volume of blood taken, and one’s health on the day. You can also seek advice from GP Glenroy at Magnus Medical. 

In this article, we'll answer the most common questions about exercising before and after a blood test, along with other important activities like driving, swimming, and drinking alcohol.

Do blood tests hurt?

During a blood test, most people experience only mild discomfort. During a blood test, a small needle is inserted into a vein in your arm to collect a blood sample. 

You may experience:

  • A quick stinging sensation when the needle is inserted into the vein. 
  • Mild pressure when blood is being collected. 
  • Slight soreness afterwards. 
  • A small bruise around the area where the needle was inserted. 

The discomfort may last only a few seconds, and tenderness usually disappears within a day or two. If you’re going to Pathology Glenroy for general blood work or special tests, you can expect some soreness around the injection site afterwards. Bruising is also normal. These symptoms should disappear in a day or two.

Can you exercise after a blood test?

The short answer is yes. Light exercise is usually safe after a blood test. However, the intensity and type of exercise matter. 

Light exercise

If it’s just a routine blood test, you can usually get engaged in light activities, such as:

  • Walking
  • Stretching
  • Easy yoga
  • Casual cycling
  • Light household activities

These activities won’t put extra stress on the arm where blood was drawn and are unlikely to cause any issues. 

Avoid Intense Exercise Immediately Afterwards

Don’t perform intense exercise for at least several hours, and sometimes, it’s recommended to avoid vigorous exercise for up to 24 hours, especially if:

  • A large amount of blood was drawn. 
  • It was not a routine blood test; instead, it was a blood donation. 
  • You feel weak or dizzy. 
  • You have significant bruising. 

Listen to Your Body

Even if it was just your routine blood test, don’t push yourself if you experience:

  • Dizziness
  • Weakness
  • Excessive fatigue
  • Nausea
  • Persistent bleeding

Once you feel better, you can resume your normal workout routine. 

Can you exercise before a blood test?

Whether you can exercise before a blood test or not completely depends on why you are having the blood test. 

For Routine Blood Tests

You can perform light activities before a routine blood test. Just make sure you limit the type of exercise that impacts blood range. For example, these types of:

  • Blood sugar
  • Lactate levels
  • Creatine kinase (CK)
  • Liver enzymes
  • White blood cell count
  • Hormone levels such as cortisol
  • Electrolytes

These changes could have an adverse impact on your test results.

If You're Fasting

For most blood tests, you'll be expected to fast for at least 8-12 hours before you have the blood test. Fasting before a blood test coupled with exercise could increase the risk of:

  • Low blood sugar
  • Dizziness
  • Fatigue
  • Fainting

If this is the case, it’s recommended to wait until after your blood test before exercising. 

Follow Your Doctor's Instructions

If your doctor advises you to avoid exercise before a blood test, ensure you listen to them very carefully to receive more accurate results. 

How long after blood test can I lift weights?

You need to consider several things before weightlifting because it puts significant pressure on the veins and muscles. For most routine blood tests, many doctors suggest waiting at least a few hours before lifting weights. If the blood test was difficult, like it involved multiple needle attempts, then it’s recommended to wait 24 hours before lifting weights. Heavy lifting immediately after a blood test may:

  • Increase bleeding
  • Cause larger bruises
  • Delay healing
  • Lead to discomfort in the arm

Can you drive after a blood test?

Mostly, yes. For most of us, it is safe to drive if our Blood alcohol content was tested during a routine test. But you need to avoid driving if you feel any form of:

  • Dizziness
  • Fainting
  • Blurred vision
  • Weakness
  • Nausea

If you feel unwell following your blood test: 

  • Sit for a few minutes before getting up. 
  • Have some water to drink. 
  • Have a small meal or snack if your fast is finished. 
  • Take some time to recover before driving.

If symptoms persist, ask someone else to drive you home.

Can you swim after taking a blood test?

Swimming is considered safe after a routine blood test, but still, it’s recommended to wait for a few hours. Swimming immediately after a blood test could:

  • Irritate the puncture site.
  • Increase bleeding if the wound hasn't closed.
  • Slightly increase the risk of infection, especially in pools, lakes, or oceans.

Conclusion

Therefore, to answer the question, can you work out after a blood test? Mostly yes. Light exercise after your routine blood draw can include walking, or even a good old stretching routine.

Just try to prevent doing an extremely high-intensity workout, a great weight-lifting workout, or your personal hardest workout on that day of the blood test- for a couple of hours, or even potentially hours.