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This is done beforedonating bloodor having ablood transfusion, to check what yourblood groupis. A blood gas test is used to check the balance of oxygen and carbon dioxide in your blood, and the balance of acid and alkali in your blood .

In some cases, if your results are significantly above or below the normal ranges, your doctor may refer you to a doctor who specializes in blood disorders . A complete blood count is a blood test used to evaluate your overall health and detect a wide range of disorders, including anemia, infection and leukemia. Quality CareFind out why Mayo Clinic is the right place for your health care. If you have low or high levels of these hormones, it could mean you have a thyroid condition such as anunderactive thyroidoroveractive thyroid.

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This involves taking a small sample of blood from a vein in your arm and from 1 or more other parts of your body. Find out more about diagnosing high cholesteroland read about cholesterol tests on Lab Tests Online UK.

• Early treatment is important, but signs of the disease may not show up in a blood test for a few weeks, so scientists anemia symptoms are looking for other ways to diagnose it.
• A bull’s-eye rash is one sign you’ve been infected, but that doesn’t always show up.
• And while you may have a headache, joint pain, and dizziness, those can be caused by lots of things.
• HDL is “good” because it removes harmful substances from your blood and helps the liver break them down into waste.

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This test is used to test your blood for levels of thyroid-stimulating hormone , and, where needed, thyroxine and triiodothyronine . When the liver is damaged, it releases substances called enzymes into the blood and levels of proteins produced by the liver begin to drop.

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This is a test to check the types and numbers of cells in your blood, including red blood cells, white blood cells and platelets. This test works by measuring how long it takes for red blood cells to fall to the bottom of a test tube. The quicker they fall, the more likely it is there are high levels of inflammation. This is another test used to help diagnose conditions that cause inflammation. If it takes a long time for your blood to clot, it may be a sign of a bleeding disorder such as haemophilia or von Willebrand disease.