Fasting Glucose details
What Fasting Glucose shows
Fasting glucose measures your blood sugar after at least 8 hours without eating, and it's one of the primary tests used to screen for and diagnose prediabetes and diabetes, since fasting removes the immediate influence of recent food intake and reflects your body's baseline glucose regulation. Elevated fasting glucose reflects reduced insulin sensitivity or insufficient insulin production, and results are interpreted against established cutoffs for normal, prediabetes, and diabetes. It's often ordered alongside HbA1c, which reflects longer-term average blood sugar, to give both a snapshot and a trend-based picture of glucose control.
Tests that include Fasting Glucose
This test measures fasting blood glucose, which reflects the body's baseline glucose level after a period without food. Fasting blood glucose levels are used for the diagnosis and treatment of carbohydrate metabolic disorders.
- Fasting Glucose Blood sugar measured after fasting, one of the primary tests used to screen for prediabetes and diabetes.
This test measures fasting blood glucose, which reflects the body's baseline glucose level after a period without food. Fasting blood glucose levels are used for the diagnosis and treatment of carbohydrate metabolic disorders.
- Fasting Glucose Blood sugar measured after fasting, one of the primary tests used to screen for prediabetes and diabetes.
This test is used to screen for gestational diabetes. A reading of 135 mg/dL or higher suggests the need for a comprehensive gestational glucose tolerance test, conducted while fasting, to confirm if gestational diabetes is present.
- Fasting Glucose Blood sugar measured after fasting, one of the primary tests used to screen for prediabetes and diabetes.
- Glucose, 1-Hour (after 50 g Oral Glucose) Your blood glucose one hour after a 50 g glucose drink, used as a screening test for gestational diabetes during pregnancy.
This test is used to screen for gestational diabetes. A reading of 140 mg/dL or higher suggests the need for a comprehensive gestational glucose tolerance test, conducted while fasting, to confirm if gestational diabetes is present.
- Fasting Glucose Blood sugar measured after fasting, one of the primary tests used to screen for prediabetes and diabetes.
- Glucose, 1-Hour (after 50 g Oral Glucose) Your blood glucose one hour after a 50 g glucose drink, used as a screening test for gestational diabetes during pregnancy.
This test measures blood sugar levels after fasting and again 1 hour after eating. It's particularly important for diagnosing conditions like gestational diabetes in pregnant individuals. If initial results indicate high sugar levels, a more detailed 2-hour oral glucose tolerance test may be recommended to confirm gestational diabetes.
- Fasting Glucose Blood sugar measured after fasting, one of the primary tests used to screen for prediabetes and diabetes.
- Glucose, Postprandial (1 Hour) Your blood glucose one hour after eating a meal, used to see how well your body handles the sugar from food.
This test measures blood sugar levels after fasting and again 2 hours after eating. It's particularly important for diagnosing conditions like gestational diabetes in pregnant individuals. If initial results indicate high sugar levels, a more detailed 3-hour oral glucose tolerance test may be recommended to confirm gestational diabetes.
- Fasting Glucose Blood sugar measured after fasting, one of the primary tests used to screen for prediabetes and diabetes.
- Glucose, Postprandial (2 Hour) Your blood glucose two hours after eating a meal, used to check how well your body brings blood sugar back down after food.
The Glucose Tolerance Test (GTT), Two-hour (Oral WHO Protocol) evaluates the body's ability to metabolize glucose by measuring blood glucose levels before and two hours after consuming a standardized glucose solution. It is used to diagnose glucose intolerance, type 2 diabetes, and gestational diabetes in pregnant women. This test is particularly useful for patients with borderline fasting or postprandial glucose levels and in the investigation of conditions like unexplained hyperglycemia, hypertriglyceridemia, and other metabolic abnormalities.
- Fasting Glucose Blood sugar measured after fasting, one of the primary tests used to screen for prediabetes and diabetes.
- Glucose, 2-Hour (after 75 g Oral Glucose) Your blood glucose two hours after a 75 g glucose drink, a key value in the oral glucose tolerance test for diabetes and prediabetes.
This test is primarily used to diagnose diabetes in children and adults who are not pregnant. For pregnant women, a different test is recommended. To get accurate results, patients need to fast overnight and then consume a 75g glucose solution. The amount of glucose for children is adjusted based on their ideal body weight. Diabetes may be diagnosed if the fasting glucose level is equal to or greater than 126 mg/dL, or if the glucose level two hours after consuming the glucose solution is equal to or greater than 200 mg/dL.
- Fasting Glucose Blood sugar measured after fasting, one of the primary tests used to screen for prediabetes and diabetes.
- Glucose, 2-Hour (after 75 g Oral Glucose) Your blood glucose two hours after a 75 g glucose drink, a key value in the oral glucose tolerance test for diabetes and prediabetes.
This test is primarily used to diagnose diabetes in children and adults who are not pregnant. For pregnant women, a different test is recommended. To ensure accurate results, patients need to fast overnight and then consume a 75g glucose solution. A fasting blood sample is taken immediately after. For children, the glucose amount is adjusted to their body weight. Diabetes may be diagnosed if fasting glucose levels are ≥126 mg/dL or if glucose levels are ≥200 mg/dL two hours after consuming the glucose.
- Fasting Glucose Blood sugar measured after fasting, one of the primary tests used to screen for prediabetes and diabetes.
- Glucose, 1-Hour (after 75 g Oral Glucose) Your blood glucose one hour after a 75 g glucose drink, part of an oral glucose tolerance test used to assess how your body handles sugar.
- Glucose, 2-Hour (after 75 g Oral Glucose) Your blood glucose two hours after a 75 g glucose drink, a key value in the oral glucose tolerance test for diabetes and prediabetes.
For appropriate interpretation of this test, the patient must fast overnight and ingest a 75 g load of glucose, immediately after a fasting specimen is obtained. (for children, the glucose load is 1.75 g/kg of body weight, up to 75). The diagnosis of diabetes is made if glucose exceeds 200 mg/dL in the 2 hour specimen and in any preceding specimen.
- Fasting Glucose Blood sugar measured after fasting, one of the primary tests used to screen for prediabetes and diabetes.
- Glucose, 2nd Specimen Your blood glucose in the second sample of a multi-sample glucose tolerance test, showing how your body handles sugar at that point after the glucose drink.
- Glucose, 3rd Specimen Your blood glucose in the third sample of a multi-sample glucose tolerance test, showing how your body handles sugar at that point after the glucose drink.
- Glucose, 4th Specimen Your blood glucose in the fourth sample of a multi-sample glucose tolerance test, showing how your body handles sugar at that point after the glucose drink.
For appropriate interpretation of this test, the patient must fast overnight and ingest a 75 g load of glucose, immediately after a fasting specimen is obtained. (for children, the glucose load is 1.75 g/Kg of body weight, up to 75). The diagnosis of diabetes is made if glucose exceeds 200 mg/dL in the 2 hour specimen and in any preceding specimen.
- Fasting Glucose Blood sugar measured after fasting, one of the primary tests used to screen for prediabetes and diabetes.
- Glucose, 2nd Specimen Your blood glucose in the second sample of a multi-sample glucose tolerance test, showing how your body handles sugar at that point after the glucose drink.
- Glucose, 3rd Specimen Your blood glucose in the third sample of a multi-sample glucose tolerance test, showing how your body handles sugar at that point after the glucose drink.
- Glucose, 4th Specimen Your blood glucose in the fourth sample of a multi-sample glucose tolerance test, showing how your body handles sugar at that point after the glucose drink.
- Glucose, 5th Specimen Your blood glucose in the fifth sample of a multi-sample glucose tolerance test, showing how your body handles sugar at that point after the glucose drink.
For appropriate interpretation of this test, the patient must fast overnight and ingest a 75 g load of glucose, immediately after a fasting specimen is obtained. (for children, the glucose load is 1.75 g/Kg of body weight, up to 75). The diagnosis of diabetes is made if glucose exceeds 200 mg/dL in the 2 hour specimen and in any preceding specimen.
- Fasting Glucose Blood sugar measured after fasting, one of the primary tests used to screen for prediabetes and diabetes.
- Glucose, 1-Hour (after 75 g Oral Glucose) Your blood glucose one hour after a 75 g glucose drink, part of an oral glucose tolerance test used to assess how your body handles sugar.
- Glucose, 2-Hour (after 75 g Oral Glucose) Your blood glucose two hours after a 75 g glucose drink, a key value in the oral glucose tolerance test for diabetes and prediabetes.
- Glucose, 3-Hour (after 75 g Oral Glucose) Your blood glucose three hours after a 75 g glucose drink, part of an extended glucose tolerance test that also looks for late drops in sugar.
- Glucose, 30-Minute (after 75 g Oral Glucose) Your blood glucose 30 minutes after a 75 g glucose drink, part of an extended glucose tolerance test that tracks your early sugar response.
This test is used for the routine diagnosis of diabetes in children and the non- pregnant adult. For pregnant females use test code 6745. For appropriate interpretation of this test, the patient must fast overnight and ingest a 75 g load of glucose, immediately after a fasting specimen is obtained. (for children, the glucose load is 1.75 g/kg of body weight, up to 75). The diagnosis of diabetes is made if glucose exceeds 200 mg/dL in the 2 hour specimen and in any preceding specimen.
- Fasting Glucose Blood sugar measured after fasting, one of the primary tests used to screen for prediabetes and diabetes.
- Glucose, 2nd Specimen Your blood glucose in the second sample of a multi-sample glucose tolerance test, showing how your body handles sugar at that point after the glucose drink.
- Glucose, 3rd Specimen Your blood glucose in the third sample of a multi-sample glucose tolerance test, showing how your body handles sugar at that point after the glucose drink.
- Glucose, 4th Specimen Your blood glucose in the fourth sample of a multi-sample glucose tolerance test, showing how your body handles sugar at that point after the glucose drink.
- Glucose, 5th Specimen Your blood glucose in the fifth sample of a multi-sample glucose tolerance test, showing how your body handles sugar at that point after the glucose drink.
- Glucose, 6th Specimen Your blood glucose in the sixth sample of a multi-sample glucose tolerance test, showing how your body handles sugar at that point after the glucose drink.
For appropriate interpretation of this test, the patient must fast overnight and ingest a 75 g load of glucose immediately after a fasting specimen is obtained. (for children, the glucose load is 1.75 g/kg of body weight, up to 75). The diagnosis of diabetes is made if glucose exceeds 200 mg/dL in the 2 hour specimen and in any preceding specimen.
- Fasting Glucose Blood sugar measured after fasting, one of the primary tests used to screen for prediabetes and diabetes.
- Glucose, 2nd Specimen Your blood glucose in the second sample of a multi-sample glucose tolerance test, showing how your body handles sugar at that point after the glucose drink.
- Glucose, 3rd Specimen Your blood glucose in the third sample of a multi-sample glucose tolerance test, showing how your body handles sugar at that point after the glucose drink.
- Glucose, 4th Specimen Your blood glucose in the fourth sample of a multi-sample glucose tolerance test, showing how your body handles sugar at that point after the glucose drink.
- Glucose, 5th Specimen Your blood glucose in the fifth sample of a multi-sample glucose tolerance test, showing how your body handles sugar at that point after the glucose drink.
- Glucose, 6th Specimen Your blood glucose in the sixth sample of a multi-sample glucose tolerance test, showing how your body handles sugar at that point after the glucose drink.
- Glucose, 7th Specimen Your blood glucose in the seventh sample of a multi-sample glucose tolerance test, showing how your body handles sugar at that point after the glucose drink.
This test measures plasma glucose levels to help diagnose and manage carbohydrate metabolic disorders. It's particularly useful for identifying conditions of abnormally high (hyperglycemia) or low (hypoglycemia) blood sugar levels.
- Fasting Glucose Blood sugar measured after fasting, one of the primary tests used to screen for prediabetes and diabetes.
- Glucose, 1-Hour (after 75 g Oral Glucose) Your blood glucose one hour after a 75 g glucose drink, part of an oral glucose tolerance test used to assess how your body handles sugar.
- Glucose, 2-Hour (after 75 g Oral Glucose) Your blood glucose two hours after a 75 g glucose drink, a key value in the oral glucose tolerance test for diabetes and prediabetes.
This test measures plasma glucose levels to help diagnose and manage carbohydrate metabolic disorders. It's particularly useful for identifying conditions of abnormally high (hyperglycemia) or low (hypoglycemia) blood sugar levels.
- Fasting Glucose Blood sugar measured after fasting, one of the primary tests used to screen for prediabetes and diabetes.
- Glucose, 1-Hour (Post-Challenge) Your blood glucose one hour after the 100 g glucose drink in a four-sample pregnancy glucose tolerance test for gestational diabetes.
- Glucose, 2-Hour (Post-Challenge) Your blood glucose two hours after the 100 g glucose drink in a four-sample pregnancy glucose tolerance test for gestational diabetes.
- Glucose, 3-Hour Your blood glucose three hours after the 100 g glucose drink, the final sample of a pregnancy glucose tolerance test for gestational diabetes.
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