what happens if someone eats or drinks anything before a blood test


So what happens if someone eats a piece of bread or a fruit or drink cafe before a blood test

In: 4

If it’s a fasting blood test to check for diabeties, it wiLl get the wrong answer and the doctor will order more tests that won’t agree. Why even try to cheat on a medical test? It’s not like a math test.

Just an inaccurate test result.

Some tests measure the body’s glucose levels which can fluctuate heavily from food intake. So if the test is trying to measure how well the body stores and regulates blood glucose, and eating before it causes a spike, then that changes the results. If someone doesn’t eat for 8 hours, and their blood sugar is still very high, something is likely wrong. Which is what the tests measure.
Same idea for the other tests. Just avoiding uncontrolled spikes due to food.

if its checking for antibodies or something similar, absolutely nothing

if its checking blood glucose, it wont be accurate

That only applies to certain things and certain tests. I’m assuming you mean a fasting test, it changes values that can skew results and affect the ability to diagnose correctly.

Depends what they are testing. I get regular bloodtests but I can eat or drink before them and it doesnt affect them.