Showing 97–112 of 199 results

  • HIV Combo

    here are three types of HIV tests: antibody tests, antigen/antibody tests, and nucleic acid tests (NAT). Antibodies are produced by your immune system when you?re exposed to viruses like HIV. Antigens are foreign substances that cause your immune system to activate. If you have HIV, an antigen called p24 is produced even before antibodies develop.

    HIV tests are typically performed on blood or oral fluid. They may also be performed on urine.

    Antibody Test
    icon of an HIV test
    An antibody test looks for antibodies to HIV in your blood or oral fluid.

    Most rapid tests and the only HIV self-test approved by the U.S. Food and Drug Administration (FDA) are antibody tests.
    In general, antibody tests that use blood from a vein can detect HIV sooner than tests done with blood from a finger stick or with oral fluid. How long will it take to get my HIV test results?
    It depends on the type of HIV test and where you get tested.

    HIV self-tests provide results within 20 minutes.
    With a rapid antibody test, usually done with blood from a finger stick or with oral fluid, results are ready in 30 minutes or less.
    The rapid antigen/antibody test, done with blood from a finger stick, takes 30 minutes or less.
    It may take several days to receive your test results with a NAT or antigen/antibody lab test.
    Antigen/Antibody Test
    icon of a health professional drawing blood for an HIV test
    An antigen/antibody test looks for both HIV antibodies and antigens.

    Antigen/antibody tests are recommended for testing done in labs and are common in the United States. This lab test involves drawing blood from a vein.
    There is also a rapid antigen/antibody test available that is done with blood from a finger stick.
    Nucleic Acid Test (NAT)
    icon of a health professional drawing blood for an HIV test
    A NAT looks for the actual virus in the blood.

    With a NAT, the health care provider will draw blood from your vein and send the sample to a lab for testing.
    This test can tell if a person has HIV or how much virus is present in the blood (HIV viral load test).
    A NAT can detect HIV sooner than other types of tests.
    This test should be considered for people who have had a recent exposure or a possible exposure and have early symptoms of HIV and who have tested negative with an antibody or antigen/antibody test.
    Talk to your health care provider about what type of HIV test is right for you.

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  • HLA B27

    HLA-B27 is a blood test to look for a protein that is found on the surface of white blood cells. The protein is called human leukocyte antigen B27 (HLA-B27).

    Human leukocyte antigens (HLAs) are proteins that help the body’s immune system tell the difference between its own cells and foreign, harmful substances. They are made from instructions by inherited genes.

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  • Homocysteine

    A homocysteine test measures the amount of homocysteine in your blood. Homocysteine is a type of amino acid, a chemical your body uses to make proteins. Normally,?vitamin B12, vitamin B6, and?folic acid?break down homocysteine and change it into other substances your body needs. There should be very little homocysteine left in the bloodstream. If you have high levels of homocysteine in your blood, it may be a sign of a?vitamin?deficiency,?heart disease, or a rare?inherited disorder. A homocysteine test may be used to:

    Find out if you have deficiency in vitamin B12, B6, or folic acid.
    Help diagnose homocystinuria, a rare, inherited disorder that prevents the body from breaking down certain proteins. It can cause serious health problems and usually starts in early childhood. Most U.S. states require all infants to get a homocysteine blood test as part of routine newborn screening.
    Screen for heart disease in people at high risk for heart attack or stroke
    Monitor people who have heart disease

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  • HSCRP

    The level of C-reactive protein (CRP) increases when there’s inflammation in your body. A simple blood test can be done to check your C-reactive protein level.

    A high-sensitivity C-reactive protein (hs-CRP) test is more sensitive than a standard CRP test. That means the high-sensitivity test can detect slight increases within the normal range of standard CRP levels. The hs-CRP test can be used to determine your risk of developing coronary artery disease, a condition in which the arteries of your heart are narrowed. Coronary artery disease can lead to a heart attack.

    Why it’s done
    Your doctor might order a CRP test to:

    Check for inflammation due to an infection
    Help diagnose a chronic inflammatory disease, such as rheumatoid arthritis or lupus
    Determine your risk of heart disease
    Evaluate your risk of a second heart attack

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  • IgE

    Allergy blood tests are used to help find out if you have an allergy. There are two general types of allergy blood tests:

    A total IgE test is used to measure the total amount of IgE antibodies in your blood.
    A specific IgE test measures how much IgE your body makes in response to a single allergen. A separate test is done for each allergen that may be causing your allergies.
    Why do I need an allergy blood test?
    Your health care provider may order allergy testing if you have symptoms of an allergy. These include:

    Stuffy or runny nose
    Sneezing
    Itchy, watery eyes
    Hives (itchy raised red patches on the skin)
    Diarrhea
    Vomiting
    Shortness of breath
    Coughing
    Wheezing

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  • IgE level

    Allergy blood tests are used to help find out if you have an allergy. There are two general types of allergy blood tests:

    A total IgE test is used to measure the total amount of IgE antibodies in your blood.
    A specific IgE test measures how much IgE your body makes in response to a single allergen. A separate test is done for each allergen that may be causing your allergies.

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  • IGF BP3

    Insulin-like growth factor binding protein 3 (IGFBP-3) is the main carrier of somatomedin C (also called insulin-like growth factor-1, or IGF-1) in the body. Blood levels of both these proteins are controlled by human growth hormone (hGH), a hormone that’s produced by the pituitary gland, a pea-sized gland in the brain that works with the endocrine system. The pituitary gland regulates growth and the function of other glands.

    But IGFBP-3 is more than just a transporter. It also helps extend the life of somatomedin C in the blood and helps control its effects on body tissues.

    Levels of IGFBP-3 are highest during childhood and puberty, then they decrease during adulthood. Levels also may be affected by sexual maturation and nutritional status

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  • IGF-1

    This test measures the amount of IGF-1 (insulin-like growth factor 1) in your blood. IGF-1 is a hormone that manages the effects of growth hormone (GH) in your body. Together, IGF-1 and GH promote normal growth of bones and tissues. GH levels in the blood fluctuate throughout the day depending on your diet and activity levels. But IGF-1 levels remain stable. So, an IGF-1 test is a useful way to find out if your body is making a normal amount of GH.

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  • IgG

    This test measures the amount of immunoglobulins, also known as antibodies, in your blood. Antibodies are proteins made by the immune system to fight disease-causing substances, like viruses and bacteria. Your body makes different types of immunoglobulins to fight different types of these substances.

    An immunoglobulins test usually measures three specific types of immunoglobulins. They are called igG, igM, and IgA. If your levels of igG, igM, or IgA are too low or too high, it may be a sign of a serious health problem.

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