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ممكن معلومات عن تحاليل مرض السكر

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  • ممكن معلومات عن تحاليل مرض السكر

    glucose tests

    fasting blood sugar
    two hours post prandial glucose test
    three hours oral glucose tolerance test


    اللي عنده اي شي عن الموضوع ينزله وجزاه الله الف خبر
    التعديل الأخير تم بواسطة labspe; الساعة 03-01-2008, 01:12 AM.

  • #2
    السلااام عليكم هذا المتوفر عندي ان شاء الله يفيدك
    The oral glucose tolerance test (OGTT) measures the body's ability to use a type of sugar, called glucose, that is the body's main source of energy. An OGTT can be used to diagnose prediabetes and diabetes. An OGTT is most commonly done to check for diabetes that occurs with pregnancy (gestational diabetes).

    Procedure for OGTT
    The patient should have been fasting for the previous 8-14 hours (water is allowed).

    Usually the OGTT is scheduled to begin in the morning (7-8) as glucose tolerance exhibits a diurnal rhythm with a significant decrease in the afternoon. A zero time (baseline) blood sample is drawn.

    The patient is then given a glucose solution to drink. The standard dose since the late 1970s has been 1.75 grams of glucose per kilogram of body weight, to a maximum dose of 75 g. It should be drunk within 5 minutes. Prior to 1975 a dose of 100 g was often used.
    التعديل الأخير تم بواسطة Dr.cute; الساعة 21-12-2007, 06:47 PM.
    ربي إنهآ أمنيةٌ عجزتٌ أن أصوغهآ لتليقْ بجلآلِك ‘
    وُ ربي أنتَ أعلمُ بمآ أريدُ فِي نفسي ..
    فَ إضمّن لي الإجآبه و لآ تحرمني تحققهآ .. !
    فإنْ ثقتي بكَ ربي تعدّت كلّ ثقه ....

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    • #3
      المشاركة الأصلية بواسطة Dr.cute مشاهدة المشاركة
      السلااام عليكم هذا المتوفر عندي ان شاء الله يفيدك
      The oral glucose tolerance test (OGTT) measures the body's ability to use a type of sugar, called glucose, that is the body's main source of energy. An OGTT can be used to diagnose prediabetes and diabetes. An OGTT is most commonly done to check for diabetes that occurs with pregnancy (gestational diabetes).

      Procedure for OGTT
      The patient should have been fasting for the previous 8-14 hours (water is allowed).

      Usually the OGTT is scheduled to begin in the morning (7-8) as glucose tolerance exhibits a diurnal rhythm with a significant decrease in the afternoon. A zero time (baseline) blood sample is drawn.

      The patient is then given a glucose solution to drink. The standard dose since the late 1970s has been 1.75 grams of glucose per kilogram of body weight, to a maximum dose of 75 g. It should be drunk within 5 minutes. Prior to 1975 a dose of 100 g was often used.


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      • #4
        Definition of Fasting blood glucose

        Fasting blood glucose: A method for learning how much glucose (sugar) there is in a blood sample taken after an overnight fast. The fasting blood glucose test is commonly used in the detection of diabetes mellitus. A blood sample is taken in a lab, doctor's office, or hospital. The test is done in the morning before the person has eaten. The normal, nondiabetic range for blood glucose is from 70 to 110 mg/dl, depending on the type of blood being tested. If the level is over 140 mg/dl, it usually means the person has diabetes (except for newborns and some pregnant women).

        2-
        Hour Postprandial Glucose

        GENERAL INFORMATION:

        What is it? A 2-hour postprandial glucose, sometimes called 2-hour PPG, is a blood test. Postprandial means "after a meal." Glucose is the simplest form of sugar and is the main source of energy in your body. Your caregiver will tell you what you should eat for the meal. You may be asked to drink a special glucose liquid instead of eating a meal. A blood sample, to be tested for glucose, is taken 2-hours after the meal or drink is finished.

        Why do I need it? You may need this test to learn if you have diabetes mellitus. Sometimes a fasting blood sugar (FBS) will be done before the 2 hr PPG. The results of these tests can tell if you have diabetes mellitus or need further testing. For more information, ask your caregiver for the CareNotes™ handout about Diabetes Mellitus. The following symptoms are reasons your caregiver may want you to have this test.

        Blurred vision.


        Excessive hunger.


        Excessive thirst.


        Excessive urination.
        Unexplained weight loss.

        Also known as: OGTT; 3-hour
        glucose tolerance test.

        What is it? A test that measures blood glucose levels four to five times over a 3-hour period. The patient is administered an oral dose of glucose solution (75 to 100 grams of an extremely sweet drink), which should cause glucose levels to rise in the first hour, and then fall back to normal within three hours as the body produces insulin to normalize glucose levels.

        Why is this test performed? To confirm a diagnosis of diabetes or gestational diabetes (and to diagnose other metabolic diseases). Because the OGTT is a more sensitive test than the fasting plasma glucose test, and involves multiple blood draws to monitor insulin production, it can often detect cases of diabetes that may be missed by the fasting test.

        How frequently should this test be performed? Once, in select individuals, for diagnosis of diabetes. A second retest may be appropriate in some patients, particularly pregnant women being tested for gestational diabetes. Additional laboratory tests may be required for an accurate diagnosis

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        التعديل الأخير تم بواسطة labspe; الساعة 03-01-2008, 01:02 AM. سبب آخر: دمج مشاركات سكره جده للفائده

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        • #5
          Glucose Tolerance Test
          Alternative names
          Oral glucose tolerance test
          Definition
          The glucose tolerance test measures the body's ability to metabolize glucose.
          How the test is performed
          Glucose is the sugar that the body uses for energy. Patients with diabetes mellitus have high blood glucose levels. Glucose tolerance tests are one of the tools for making the diagnosis of diabetes.
          The most common glucose tolerance test is the oral glucose tolerance test (OGTT). After an overnight fast, a patient drinks a solution containing a known amount of glucose. Blood is obtained before the patient drinks the glucose solution, and blood is drawn again every 30 to 60 minutes after the glucose is consumed for up to 3 hours.
          Blood glucose levels above normal limits at the times measured can diagnose type 2 diabetes or gestational diabetes (high blood glucose during pregnancy). Insulin levels may also be measured. (Insulin is the hormone produced by the pancreas that moves glucose from the bloodstream into cells.)
          The intravenous glucose tolerance test (IGTT) is not often used. In this test, patients are given a known amount of glucose by vein for 3 minutes, and blood insulin levels are measured before glucose and at 1 and 3 minutes. Insulin levels below a standard threshold may predict the development of type 1 diabetes in some patients.
          How to prepare for the test
          Fast for 12 hours and do not eat during the test. Consult your health care provider if you are using medication that can interfere with the test results. (See special considerations.)
          Infants and children:
          The physical and psychological preparation you can provide for this or any test or procedure depends on your child's age, interests, previous experience, and level of trust. For specific information regarding how you can prepare your child, see the following topics as they correspond to your child's age:
          • Infant test/procedure preparation (birth to 1 year)
          • Toddler test/procedure preparation (1 to 3 years)
          • Preschooler test/procedure preparation (3 to 6 years)
          • Schoolage test/procedure preparation (6 to 12 years)
          • Adolescent test/procedure preparation (12 to 18 years)
          How the test will feel
          When the needle is inserted to draw blood, some people feel moderate pain, while others feel only a prick or stinging sensation. Afterward, there may be some throbbing.
          Why the test is performed
          The oral glucose tolerance test is used to screen pregnant women for gestational diabetes between 24 and 28 weeks of pregnancy. It may also be used to diagnose diabetes in research studies and in cases where the disease is suspected despite a normal fasting blood glucose.
          Normal Values
          For a 75-gram oral glucose tolerance test used to check for type 2 diabetes, normal (nondiabetic) blood values are:
          • fasting: 60 to 110 mg/dL
          • 1 hour: less than 200 mg/dL
          • 2 hours: less than 140 mg/dL. Between 140-200 mg/dL is considered impaired glucose tolerance. This group is at increased risk for developing diabetes. Greater than 200 mg/dL is diagnostic of diabetes mellitus
          For a 50-gram oral glucose tolerance test used to screen for gestational diabetes, normal blood values at 1 hour are less than 140 mg/dL.
          For a 100-gram oral glucose tolerance test used to screen for gestational diabetes, normal blood values are:
          • fasting: less than 95 mg/dL
          • 1 hour: less than 180 mg/dL
          • 2 hour: less than 155 mg/dL
          • 3 hour: less than 140 mg/dL
          Note: mg/dL = milligrams per deciliter
          What abnormal results mean
          Greater than no>Greater than normal levels of glucose may indicate
          • Diabetes
          • Gestational diabetes
          High glucose levels may be a manifestation of another clinical problem (for example, Cushing's syndrome).
          What the risks are
          Risks from venipuncture include:
          • Excessive bleeding
          • Fainting or feeling lightheaded
          • Hematoma (blood accumulating under the skin)
          • Infection (a slight risk any time the skin is broken)
          • Multiple punctures to locate veins
          Veins and arteries vary in size from one patient to another and from one side of the body to the other. Obtaining a blood sample from some people may be more difficult than from others.
          Special considerations
          Interfering factors:
          • Acute stress (for example, from surgery or an infection)
          • Vigorous exercise
          Several drugs may cause glucose intolerance, including the following:
          • Thiazide diuretics (e.g., hydrochlorothiazide)
          • Beta-blockers (e.g., propranolol)
          Oral contraceptives
          • Corticosteroids (e.g., prednisone)
          • Some psychiatric medications
          Before having the test, let your health care provider know if you are taking any of these medications.
          (From the National Institute of Health)



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