If you take aspirin to ward off a headache, or aches and pains, you know before long whether or not it worked.
But if your approach is more long term, say to prevent a heart attack or stroke, how do you know if the aspirin is working? Doctors are learning aspirin doesn't work for everybody. There's a new test to see if you're aspirin resistant.
A new test from Aspirin Works obtains a specimen of urine and then measures a chemical in the urine that tells you whether the aspirin is taking effect or not.
It shows which patients are resistant to aspirin therapy.
Doctors say sometimes dose dependency, where we don't all absorb aspirin the same way, may signal a need for a little more aspirin than other people.
They say it's critical to identify which patients are aspirin resistant because they die from their heart attacks three and a half times more than patients for whom aspirin works.
The president of Aspirin Works says there's no doubt anymore that aspirin resistance or the inappropriate response to aspirin truly has an effect and/or impact on people's lives.
The test is so new only eight labs across the country are set up to run it. It costs about $80 and some insurance companies cover it.
To find out more about aspirin resistance and this new test, log onto www.aspirinworks.com