The reason I selected an hour after eating for postprandial measurements is that I had a Glucose Tolerance Test in 2008 and my blood glucose peaked 70 minutes after eating. All measurements were made with a pair of Accucheck Aviva glucometers and a Bayer Contour USB glucometer. What does the science say? Jenny Ruhl has guidance on this at her excellent web site Blood Sugar 101. My personal take on blood glucose targets and the selection of food to eat: my #1 goal is to never have to be on insulin. As a practical matter, I look at the results of the food tests in this web site and will, in the future, eat only those that have a minimal effect on my blood glucose.
The New Atkins for a New You recommends that those trying to lose weight limit net carbs (total carbs minus fiber) to 20g during induction, then gradually add carbs in 5g increments as long as weight loss is not halted or other problems do not arise. Got a Request?I’m a very busy guy with the site, but if you have a special request for an item that should be tested, let me know. Science, Technology and Medicine open access publisher.Publish, read and share novel research. The Glucose Tolerance Test as a Laboratory Tool with Clinical ImplicationsPaul Ernsberger and Richard J. A glucose tolerance test is used commonly among clinicians to determine how quickly glucose is cleared from the blood. Data on the internal consistency of fasting blood glucose (FBG) and 2 hrs-oral glucose tolerance test (OGTT) are scarce despite of its importance both for research and treatment purposes. FBG and OGTT were performed on two consecutive days among the 218 (107 men and 111 women) newly diagnosed type 2 diabetes patients at BIRDEM (a diabetic hospital), Dhaka Bangladesh. Further studies are needed to investigate the observed difference in FBG measures with specific attention to BMI and the fasting state. Different diagnostic criteria have been established to reduce the risks for the development of complications among the diabetic patients [1,4]. The ADA published revised criteria for the diagnosis of diabetes that includes a FPG value, with a confirmatory test on a subsequent day [6]. All people with type 2 diabetes who were diagnosed within 4 weeks prior to the scrutiny attending FBG test at outdoor facility of Bangladesh Institute of Research on Diabetes, Endocrinology and Metabolism (BIRDEM) hospital, Dhaka, Bangladesh were requested to participate in the study during the month of November, 2003.
1st day data collection- (FBG1 and OGTT1) – Screening subjects attending BIRDEM hospital for confirmatory test were informed about the procedures of the test previously at the time of collection screening test result. 2nd day data collection- (FBG2 and OGTT2) - FBG and OGTT tests were repeated on all the subjects on the next day by ensuing the same procedure.
Consistency of the diagnostic procedures FBG or OGTT for the diagnosis of diabetes mellitus appeared to be reasonably reliable on two consecutive days. Relatively stronger consistency over the repeated tests was observed among lower level of FBG values, while this was true for higher OGTT values.
More investigations are needed to reduce the ambiguity of the test results by including some control subjects, preferably in the hospital and rather than fasting time to reduce the confusion, and to observe the creditability of the fasting state as assessed by interviews. We sincerely thank the team at BIRDEM hospital for their cooperation and the subjects for their participation.
The Expert Committee on the Diagnosis and Classification of Diabetes Mellitus: Report of the Expert Committee on the Diagnosis and Classification of Diabetes Mellitus Diabetes Care 20 (1997), pp. The DECODE Study Group on behalf of the European Diabetes Epidemiology Group: Is fasting glucose sufficient to define diabetes? The final destination of a journey is not, after all, the last item on the agenda, but rather some understanding, however simple or provisional, of what one has seen.
In these modern times, with the plethora of blood-sugar-related diseases, we need tools like GI and GL to help us understand ways to control blood sugar.
The self-testing, graphic approach to food testing developed in the balance of the newsletter is a less scientific but a more dynamic way to explore postprandial (post-meal) blood glucose levels (BGLs). GI measures the blood glucose impact of foods eaten in isolation, yet we rarely consume foods this way. GI readings vary with the individual—blood sugar and insulin reactions are more extreme for diabetics, for example (See Charts 2A and 2B). GIs are calculated in the science lab as the day’s first meal after a 12-hour fast and using a fixed serving that includes 50 grams of carbohydrate.  Most of our daily calories, however, are consumed in combination and throughout the day, when our blood sugar is affected by other foods that we have eaten earlier, as well as by our level of activity. Of the following numbered charts, the first three are based upon scientific research journal articles (Charts 1, 2A, 2B), while the last four (Charts 3-6) are constructed from my own self-testing of foods4 using a simple blood glucose monitor. Chart 1:  Blood Sugar Curves of White Bread Compared to Bread with Added Fiber, Sourdough, and Vinegar.
Chart 3:  Instant Oatmeal, Whole Oats (Soaked and Not Soaked), and Whole Oats Combined with a Protein and Fat.
To fully appreciate the impact of two back-to-back carbohydrate breakfasts please notice that the scale used for Chart 6 is twice that of Charts 3-5.
Resetting the Table–to Control Blood Sugar (For a discussion of other strategies, see April 2011). Ramekins filled with condiments like nuts and seeds (GI=0).  Nuts and seeds provide healthy fats, fiber, vitamins, minerals, and antioxidants, while they slow digestion and curb blood sugar.
Sourdough bread or whole-grain bread with whole kernels; butter from grass-fed cows and organic nut and seed butters such as tahini and pumpkin seed butter.

A pitcher of water and glasses for all—sometimes we mistake hunger for what is in fact thirst.  You might flavor the water with a little lemon juice or other flavoring. For the dressing, mix and whisk together equal parts, shoyu, mirin, and tahini.  Add dressing to quinoa salad, toss and enjoy. Because 12-hour fasting, pre-meal blood sugar reading can vary, all data points at time zero prior to the first morning meal were indexed to zero in order to illustrate the change from a neutral starting point.
I use the label “traditional” carbohydrates, just as we call unrefined fats, “traditional” fats. Make sure you eat normally for several days before the test. Do not eat or drink anything for at least 8 hours before the test.
Drinking the glucose solution is similar to drinking very sweet soda. Serious side effects from this test are very uncommon. You may have some of the symptoms listed above under the heading titled "How the Test will Feel." Veins and arteries vary in size from one person to another and from one side of the body to the other. Please use newer version of your browser or visit Internet Explorer 6 countdown page for more information.
This is because of changes over the day in how insulin resistant by body is and in the amount of insulin I produce, lingering effects of previous meals, glucometer inaccuracies, and other factors. It usually takes me about five minutes to eat, though I drank 75g of dextrose, the stimulus for my GTT, in under a minute.
Both measurements for each test (one before and one after eating) were made with the same meter.
I am very skeptical of these targets, which do not appear to fully consider the consequences of blood glucose levels this high or how lower targets can be reached with a very low carb diet. I am strongly motivated to avoid the need to inject myself with a drug that has to be carefully calibrated for the food I eat and the time I eat it. The table below shows colors associated with various average blood glucose increases measured an hour after eating.
Richard Bernstein recommends that diabetics eat no more than 6 grams at breakfast, 12g at lunch and 12g at dinner for a total of no more than 30g per day.
Eric Westman has had clinical success with diabetes patients at Duke University with a diet of just 20g net carbs per day.
Glucose tolerance test: untreated SHROB versus SHROB treated with antihyperglycemic agents and one antihypertensive agent. Clinicians will take blood samples at two time intervals, results similar to below will be conclusive in diagnosing diabetes. This symptom is normally caused by prolonged high blood glucose causing glucose absorption, which leads to changes in the shape of the lens, resulting in reversible vision changes such as blurriness.
Further, an interview with each subject was conducted and HbA1c, bio-physical and anthropometric examinations were performed. The observed variation for FBG and OGTT should be considered during diagnosis of diabetes or control of the condition. The most widely used diagnostic criteria for glucose intolerance was recommended by the World Health Organization (WHO) based on fasting plasma glucose (FPG) value and glucose value measured 2 hrs after a standard 75-g glucose load (OGTT) [5]. In contrast to the recommendation of ADA, World Health Organization (WHO) recommends using the OGTT in clinical practice [5].
At that time participants were asked to undertake 12 hrs fast for confirmatory test, avoid any treatment for diabetes and physical activities during this one month. A fasting sample of venous blood was also collected for HbA1c measurement on the second day by HPLC (ion exchange high-performance liquid chromatography) using a Modular Diabetes Monitoring System (BioRad, Variant, USA) method.
However, it was observed that PD was normally distributed and that a total of 95% of the FBG and OGTT values varied respectively within approximately ± 25 % and ± 24% on a day to day basis.
We extend our thanks to Medical Statistician Geir Aamodt at the Department of Medical Statistics, University of Oslo for his assistance in analyzing the data. Comparison of tests for glycated haemoglobin and fasting and two hour plasma glucose concentrations as diagnostic methods for diabetes. Comparison of fasting And 2-hour glucose and HBA1c levels for Diagnosing diabetes: diagnostic criteria and Performance revisited.
Repeatability of the oral glucose tolerance test for the diagnosis impaired glucose tolerance and diabetes? Report of a WHO Consultation, Part 1: Diagnosis and classification of Diabetes Mellitus, Geneva 1999, Worl Health Organization. Comparing methods of mesurment: why plotting difference against standard method is misleading. Day-to-day variability of fasting plasma in newly diagnosed type 2 diabetic subjects, Diabetes Care 22 (1999), pp. Comparison of the fasting and the 2-hour glucose criteria for diabetes in different Asian cohorts. The second factor—the postwar shift from traditional to refined carbohydrates—is largely due to the growing role of the commercial food industry and processed, convenience foods.  Convenience foods must have a long shelf-life, so food companies rely upon refined flours and oils, which do not go rancid. Visual pictures of postprandial blood sugar behavior, while less scientific than GI measurements, are nevertheless powerful learning tools, providing a real flavor for how our body reacts when we eat different kinds of foods. This chart illustrates the second meal effect– that what we eat at one meal affects postprandial blood sugar behavior at the next.

What we do to our children when we give them a sugary cereal or a Pop-tart for breakfast extends beyond this first meal to affect their blood sugar, hunger, concentration, and desire to overeat throughout the rest of the day. One of the best herbs and spices to moderate blood sugar.  It can be sprinkled on hot cereals and desserts such as puddings, custards, and stewed fruits. With the blood test, some people feel nauseated, sweaty, light-headed, or may even feel short of breath or faint after drinking the glucose. He recommends subtracting half of the fiber from the total carb count to estimate effective carbs. A 17-gauge Luer-lock venflon was inserted in to both anticubital fossa and sample was taken for HbA1c. Statistical comparisons among sex, BMI, SBP and DBP were made by one sample t- test for continuous variables and chi-square tests for group comparisons. The inconsistency of the test results was largely influenced by female subjects following FBG procedure.
HbA1c appeared to have improved associations with FBG measures contrasting against OGTT values.
The upper limit of blood glucose measurement by HemoCue Blood-glucose analyzer and sample size may also be a concern for further investigation. Tell your doctor if you have a history of these symptoms related to blood tests or medical procedures.
Vigorous exercise can lower your blood glucose level.  Some medicines can raise or lower your blood glucose level. At some point, I may get a continuous blood glucose meter to measure my total glucose response, but this is definitely a limitation of my current tests.
Also, some of these food products are rarely eaten with no other, the way I tested them; sandwich bread might be eaten with peanut butter and sugar-free pickles, rather than carb-free cheese,  and a salad. Moreover, the DECODE study found that almost 30% of all patients with diabetes (based on fasting or 2hrs - PG following OGTT or both) would remain undetected [7]. At the end of 2hrs blood glucose test, all subjects were interviewed to collect information regarding socio-economic, family history, treatment history and smoking habit etc.
Anthropometrical data and blood pressure were measured in the same examination room to avoid any influence of physical activity between 2 hrs time of glucose drink and OGTT2. Moreover, both FBG and OGTT values appeared to have no significant deviation from normality as assessed by the PD. Either setting will likely have implications in the epidemiology, treatment and control of the state of diabetes. This is why diabetes and obesity often go hand-in-hand (90% of diabetics are either overweight or obese). David Ludwig regarding high-glycemic foods and overeating, cited in the Recommended Reading section at the conclusion of this newsletter. I do a lot of tests of each product and compute the average and standard deviation of the results. SHR were fed a supplementary sweet drink to induce dietary obesity in these genetically lean rats.
This low agreement may raise concern for identification and treatment of people with diabetes. Moreover, the increased variability was also stratified by hypertension, which may raise attention for diagnosis of hypertensive subjects. It was also recommended by ADA that the internal stability of the diagnostic procedures should be carefully considered when monitoring glycemic control for people with diabetes [10,13].
Liner regression analysis was carried out to describe the relation between FBG, OGTT and HbA1c with PDs and averaged values of them. Therefore, elevated variability of the test results among women and hypertensive subjects by FBG procedure deserves attention for future studies with a focus on obese status. This may have been true for the newly diagnosed cases as was observed in other studies [18]. Data on the internal consistency of these two procedures is scarce especially from ethnic groups representing the highest increase of incidence in type 2 diabetes. Scattered diagrams are also presented to indicate the correlation and inter-relationship of those values. Therefore the purpose of the study was to assess the day to day variability of FBG and OGTT in people with newly diagnosed type 2 diabetes in Bangladesh. Blood insulin levels are measured before the injection, and again at 1 and 3 minutes after the injection.
In addition, both the diagnostic procedures were examined against glycosylated hemoglobin A1c in order to observe the strength of FBG and OGTT procedures.

Blood sugar testing postprandial blood
What is the normal range of blood glucose after fasting glucose
Average daily blood sugar levels


  1. 22.01.2015 at 14:47:18

    Had to get off because I was.

    Author: IDMANCI
  2. 22.01.2015 at 22:54:52

    High sugar content, such as orange juice, pancakes are.

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  3. 22.01.2015 at 22:50:14

    Complications of long-standing hyperglycemia, such as heart when the person misses a meal.

    Author: JanimKa
  4. 22.01.2015 at 21:31:11

    Snacks, both your weight and your blood secretion causes the physical symptoms.

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  5. 22.01.2015 at 15:14:20

    Unconsciousness (passing out food choices to focus after people with diabetes.

    Author: ToTo_iz_BaKy