Q:

Do you need to fast before a CBC blood test?

A:

Quick Answer

Individuals do not need to fast before a CBC, or complete blood count, test, states Drugs.com. The test can be done at any time, and the patient does not have to do anything to prepare for the test.

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Full Answer

CBC blood tests are often a part of a routine health check. Doctors also use them to help determine if the patient has an infection or to check levels of certain medications in the blood, states Cleveland Clinic. Doctors can use the results of the CBC to help diagnose conditions such as cancer, autoimmune diseases, anemia, vitamin deficiencies and bone marrow conditions.

The CBC blood test measures the levels of the components in the blood, including red blood cells, white blood cells, platelets and hemoglobin, according to Cleveland Clinic. It also measures the size and concentration of red blood cells.

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Related Questions

  • Q:

    What is a CBC w Diff PLT test?

    A:

    A CBC with diff PLT test is a complete blood count with differential test. Usually, this test is ordered by a physician to provide information about the amount of various blood cells in the body. One of the cells that is tested is the platelet, which is abbreviated in the test as PLT.

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  • Q:

    Why is a CBC with DIFF with PLT blood test performed?

    A:

    There is no definitive reason that a CBC with DIFF with PLT blood test might be ordered. It is a diagnostic tool and can be used to follow the progress of a diagnosed illness. A DIFF is generally ordered when a CBC shows counts outside normal limits, according to Lab Tests Online.

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  • Q:

    What do blood tests show?

    A:

    The most common blood test, the complete blood count, or CBC, measures red blood cells, white blood cells, hemoglobin, hematocrit, platelets and mean corpuscular volume of the blood, according to the National Heart, Lung and Blood Institute. This test is often used to check symptoms and diagnose a wide variety of conditions, such as anemia, infections, blood cancers, clotting problems and immune system disorders.

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  • Q:

    What are some blood test codes?

    A:

    Blood test codes include CBC for a complete blood count, CRP for C-reactive protein and hCG for a human chorionic gonadotropin test, according to the California Pacific Medical Center. Doctors order these tests during routine a checkup to confirm a diagnosis or to monitor a condition.

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