the health care provider will try to find the underlying illness that is causing the symptoms of nausea and vomiting. at the same time steps will be taken to treat the symptoms and prevent dehydration. any testing will likely be directed to finding the underlying diagnosis. however blood tests may be taken to assess whether the electrolyte balance in the body has been disturbed due to dehydration from continued vomiting. a urinalysis may be done. concentrated urine is associated with dehydration as the kidneys try to hold onto water in the body. ketones in the urine are also a sign of dehydration.
how is the source of nausea or vomiting diagnosed?