The blood tests that are done for vomiting are a CBC or complete blood count test, which checks for infection or anemia, an electrolyte panel blood test to check for mineral imbalances and dehydration and a blood test that checks for liver and kidney function to assess organ health.
If you're a women of childbearing age, a pregnancy test is often also ordered to test for what is causing the vomiting.
The common blood tests that are done for vomiting are complete blood count, electrolyte panel, kidney function tests, liver function tests, pregnancy tests and other potential blood tests like C reactive protein test, Amylase and Lipase test and blood clotting test.
A complete blood count or CBC blood test, measures the red blood cells, white blood cells and the platelets to detect signs of infection, "high white blood cells" or bleeding "low red blood cells".
The electrolyte panel blood test, checks the levels of sodium, potassium and chloride.
Vomiting can result in significant imbalances that affect your heart and muscle function.
Kidney function blood tests measure the levels of substances like blood urea nitrogen "BUN" and creatinine, which can help to assess dehydration and the impact of vomiting on your kidney function.
Liver function blood tests, check for signs of liver damage or liver inflammation, as some infections can also affect your liver.
A pregnancy test such as the beta-hCG test is a common and simple test for women of childbearing age to rule out pregnancy as a cause of morning sickness vomiting.
A C-Reactive Protein blood test is to check for the C-Reactive Protein blood marker that can indicate inflammation or infection.
The Amylase and Lipase blood test check for the Amylase and Lipase enzymes to see if pancreatitis is a cause of the vomiting.
And a blood clotting test can be done if there's is any concern about significant blood loss or bleeding disorders.