How is food poisoning diagnosed?
Your doctor will evaluate your symptoms and ask for details about what you’ve had to eat and drink recently. Depending on your symptoms, your doctor may also take a stool sample or blood test to check for parasites or bacteria.
How do I know if I have food poisoning?
It can be hard to tell whether you have foodborne illness or another kind of infection. Symptoms of food poisoning are similar to symptoms of gastroenteritis (often called stomach flu, though gastroenteritis isn’t influenza).
If your symptoms appeared after eating a particular food, and if other people who ate the same food are also sick, you may have food poisoning.