Cholesterol/triglyceride blood-work: Can I workout the morning of the test?

Answered on August 19, 2014
Created February 21, 2012 at 4:35 PM

From what I understand I should get my blood-work taken while fasted, but I was wondering if I can still workout in the morning?

I actually do fasted training every morning (7:00 - 8:00), but should I skip it the morning of the test which is at 10:00?

The question being would it skew the results in some way?


22.02.12: Thanks everyone, will keep fasted and skip the training. Looking forward to actually seeing some numbers for the first time next week. I just wish I took a test before I started Paleo to see if there is that much of a change.

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on February 22, 2012
at 02:33 AM

"Engaging in vigorous exercise just before your blood test can temporarily lower your cholesterol and triglyceride values, but a vigorous workout can also raise the level of a muscle enzyme called CPK. It's wise, therefore, to take a day off from intense workouts just before you take the test."


But then there's this:

"Don't exercise before your test. Exercise can cause a temporary rise in cholesterol levels - as much as 10 to 15 percent - for up to an hour after you've stopped exercising."


In summary, hellifiknow.



on February 22, 2012
at 03:15 AM

I would advise against it. You'd be surprised at the number of assumptions made in most blood work. They aren't actually measuring something in your blood, they're measuring something that correlates with what you want measured and then that's calibrated from other standard samples which assume "standard conditions". The one they talk about is the 4 hour fast, but they're also assuming your pre-test behavior is going to be like everyone else, and that means probably being sedentary.



on February 21, 2012
at 08:06 PM

i am having cholesterol screening at work next week and the specifically state no food or exercise before the test. exercise affects blood sugar so probably affects cholesterol; maybe increases in response to the micro tears in the muscle? my guess is to wait till after the blood draw.



on February 21, 2012
at 05:55 PM

Your doc will probably be pissed about your elevated creatinine and BUN levels if those are included.

If you can deal with some finger wagging about elevated liver panels, then sure - train on the morning of your blood test.

If you are doing this for markers that you want to measure by, then skip it.



on February 21, 2012
at 05:44 PM

I'm getting my blood work done at 12:15 today! SUcks that I have to fast for 4 hours but I can handle it. ANyways I went for a run last night and then ate a ton of food haha im still pretty solid no hunger pangs yet. Good luck! Im looking to bring down my tc from 204 last june. Hoping for 190 range.

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